diff --git a/CHANGELOG.md b/CHANGELOG.md
index b88f5e88505..2cacba638ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 ### Changed
 
 ### Fixed
+- [#2097](https://github.com/wasmerio/wasmer/pull/2097) Fix how string's length is computed in `wasm_cpu_features_add` in the C API.
 
 ## 1.0.2 - 2021-02-04
 
diff --git a/lib/c-api/src/wasm_c_api/unstable/target_lexicon.rs b/lib/c-api/src/wasm_c_api/unstable/target_lexicon.rs
index ccba407834c..c92a2edcb0e 100644
--- a/lib/c-api/src/wasm_c_api/unstable/target_lexicon.rs
+++ b/lib/c-api/src/wasm_c_api/unstable/target_lexicon.rs
@@ -300,7 +300,7 @@ pub unsafe extern "C" fn wasm_cpu_features_add(
     let feature = c_try!(
         str::from_utf8(slice::from_raw_parts(
             feature.data,
-            feature.size + 1,
+            feature.size,
         ));
         otherwise false
     );