diff --git a/jl_sys/build.rs b/jl_sys/build.rs
index 98f22df..3bb5012 100644
--- a/jl_sys/build.rs
+++ b/jl_sys/build.rs
@@ -242,15 +242,29 @@ fn compile_jlrs_cc(julia_dir: &str, target: Option<Target>) {
     #[cfg(feature = "lto")]
     c.flag("-flto=thin");
 
+    cfg_if! {
+        if #[cfg(feature = "julia-1-6")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("6"));
+        } else if #[cfg(feature = "julia-1-7")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("7"));
+        } else if #[cfg(feature = "julia-1-8")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("8"));
+        } else if #[cfg(feature = "julia-1-9")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("9"));
+        } else if #[cfg(feature = "julia-1-10")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("10"));
+        } else if #[cfg(feature = "julia-1-11")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("11"));
+        } else if #[cfg(feature = "julia-1-12")] {
+            c.define("JLRS_EXPECTED_MINOR_VERSION", Some("12"));
+        }
+    };
+
     // Enable fast (i.e. local-exec) TLS. Only enable this feature if you're embedding Julia in a
     // Rust application.
     #[cfg(all(feature = "fast-tls", not(feature = "yggdrasil")))]
     c.define("JLRS_FAST_TLS", None);
 
-    // Set JULIA_VERSION_MINOR for Julia 1.6 because julia_version.h doesn't exist
-    #[cfg(feature = "julia-1-6")]
-    c.define("JULIA_VERSION_MINOR", Some("6"));
-
     #[cfg(all(
         any(windows, target_os = "windows", feature = "windows"),
         feature = "julia-1-6"
diff --git a/jl_sys/src/jlrs_cc/jlrs_cc.h b/jl_sys/src/jlrs_cc/jlrs_cc.h
index 47d86e4..e716404 100644
--- a/jl_sys/src/jlrs_cc/jlrs_cc.h
+++ b/jl_sys/src/jlrs_cc/jlrs_cc.h
@@ -10,6 +10,10 @@
 #include <julia_version.h>
 #endif
 
+#if JLRS_EXPECTED_MINOR_VERSION != JULIA_VERSION_MINOR
+#error Mismatch between selected Julia version and detected version
+#endif
+
 #include "jlrs_cc_windows.h"
 
 #include <julia.h>
diff --git a/jl_sys/src/jlrs_cc/jlrs_cc_windows.h b/jl_sys/src/jlrs_cc/jlrs_cc_windows.h
index c938040..551dee2 100644
--- a/jl_sys/src/jlrs_cc/jlrs_cc_windows.h
+++ b/jl_sys/src/jlrs_cc/jlrs_cc_windows.h
@@ -5,7 +5,7 @@
 #include <winsock2.h>
 #include <windows.h>
 
-#if JULIA_VERSION_MINOR == 6
+#if JLRS_EXPECTED_MINOR_VERSION == 6
 template <typename T>
 static inline T jl_atomic_load_relaxed(volatile T *obj)
 {
diff --git a/jlrs/Cargo.toml b/jlrs/Cargo.toml
index f494088..f92030d 100644
--- a/jlrs/Cargo.toml
+++ b/jlrs/Cargo.toml
@@ -33,7 +33,7 @@ julia-1-10 = ["jl-sys/julia-1-10", "jlrs-macros/julia-1-10"]
 # Link Julia 1.11
 julia-1-11 = ["jl-sys/julia-1-11", "jlrs-macros/julia-1-11"]
 # Link Julia 1.12
-julia-1-12 = ["jl-sys/julia-1-11", "jlrs-macros/julia-1-12"]
+julia-1-12 = ["jl-sys/julia-1-12", "jlrs-macros/julia-1-12"]
 
 # Enable all features except any version features
 full = ["local-rt", "tokio-rt", "jlrs-ndarray", "f16", "complex", "jlrs-derive", "ccall", "multi-rt"]
diff --git a/jlrs/src/data/types/mod.rs b/jlrs/src/data/types/mod.rs
index ba0227e..1931411 100644
--- a/jlrs/src/data/types/mod.rs
+++ b/jlrs/src/data/types/mod.rs
@@ -3,5 +3,5 @@
 pub mod abstract_type;
 pub mod construct_type;
 pub mod foreign_type;
-pub mod typecheck;
 pub mod primitive_type;
+pub mod typecheck;
diff --git a/jlrs/src/data/types/primitive_type.rs b/jlrs/src/data/types/primitive_type.rs
index a827584..597cea1 100644
--- a/jlrs/src/data/types/primitive_type.rs
+++ b/jlrs/src/data/types/primitive_type.rs
@@ -1,11 +1,13 @@
 //! Primitive type trait
 
+use super::{
+    abstract_type::{AbstractChar, AbstractFloat, Integer, Signed, Unsigned},
+    construct_type::ConstructType,
+};
 use crate::prelude::{Bool, Char};
 
-use super::{abstract_type::{AbstractChar, AbstractFloat, Integer, Signed, Unsigned}, construct_type::ConstructType};
-
 /// A primitive type.
-/// 
+///
 /// Safety: must only be implemented by types that are primitive types in Julia.
 pub unsafe trait PrimitiveType: ConstructType {
     /// The size of an instance of this type in bits
@@ -15,8 +17,8 @@ pub unsafe trait PrimitiveType: ConstructType {
 }
 
 /// A primitive type.
-/// 
-/// Safety: must only be implemented by types that are primitive types in Julia and subtypes of 
+///
+/// Safety: must only be implemented by types that are primitive types in Julia and subtypes of
 /// `Integer`.
 pub unsafe trait IntegerType: PrimitiveType {}
 
diff --git a/jlrs_macros/src/version.rs b/jlrs_macros/src/version.rs
index 250759d..9ea84ba 100644
--- a/jlrs_macros/src/version.rs
+++ b/jlrs_macros/src/version.rs
@@ -6,7 +6,60 @@ const MAJOR_VERSION: usize = 1;
 const LTS_MINOR_VERSION: usize = 6;
 const NIGHTLY_MINOR_VERSION: usize = 12;
 
-#[cfg(feature = "julia-1-6")]
+#[cfg(not(any(
+    feature = "julia-1-6",
+    feature = "julia-1-7",
+    feature = "julia-1-8",
+    feature = "julia-1-9",
+    feature = "julia-1-10",
+    feature = "julia-1-11",
+    feature = "julia-1-12",
+)))]
+compile_error!(
+    "A Julia version must be selected by enabling exactly one of the following version features:
+    julia-1-6
+    julia-1-7
+    julia-1-8
+    julia-1-9
+    julia-1-10
+    julia-1-11
+    julia-1-12"
+);
+
+#[cfg(any(
+    all(feature = "julia-1-6", feature = "julia-1-7"),
+    all(feature = "julia-1-6", feature = "julia-1-8"),
+    all(feature = "julia-1-6", feature = "julia-1-9"),
+    all(feature = "julia-1-6", feature = "julia-1-10"),
+    all(feature = "julia-1-6", feature = "julia-1-11"),
+    all(feature = "julia-1-6", feature = "julia-1-12"),
+    all(feature = "julia-1-7", feature = "julia-1-8"),
+    all(feature = "julia-1-7", feature = "julia-1-9"),
+    all(feature = "julia-1-7", feature = "julia-1-10"),
+    all(feature = "julia-1-7", feature = "julia-1-11"),
+    all(feature = "julia-1-7", feature = "julia-1-12"),
+    all(feature = "julia-1-8", feature = "julia-1-9"),
+    all(feature = "julia-1-8", feature = "julia-1-10"),
+    all(feature = "julia-1-8", feature = "julia-1-11"),
+    all(feature = "julia-1-8", feature = "julia-1-12"),
+    all(feature = "julia-1-9", feature = "julia-1-10"),
+    all(feature = "julia-1-9", feature = "julia-1-11"),
+    all(feature = "julia-1-9", feature = "julia-1-12"),
+    all(feature = "julia-1-10", feature = "julia-1-11"),
+    all(feature = "julia-1-10", feature = "julia-1-12"),
+    all(feature = "julia-1-11", feature = "julia-1-12"),
+))]
+compile_error!("Multiple Julia version features have been enabled");
+
+// Avoid a second error if no version feature is enabled
+#[cfg(not(any(
+    feature = "julia-1-7",
+    feature = "julia-1-8",
+    feature = "julia-1-9",
+    feature = "julia-1-10",
+    feature = "julia-1-11",
+    feature = "julia-1-12",
+)))]
 const SELECTED_MINOR_VERSION: usize = 6;
 #[cfg(feature = "julia-1-7")]
 const SELECTED_MINOR_VERSION: usize = 7;