diff --git a/CMakeModules/EosioTester.cmake.in b/CMakeModules/EosioTester.cmake.in
index f47743fe5cb..741ee5f0e84 100644
--- a/CMakeModules/EosioTester.cmake.in
+++ b/CMakeModules/EosioTester.cmake.in
@@ -8,6 +8,15 @@ set(EOSIO_VERSION "@VERSION_MAJOR@.@VERSION_MINOR@.@VERSION_PATCH@")
 
 enable_testing()
 
+if (UNIX)
+   if (APPLE)
+      if (LLVM_DIR STREQUAL "" OR NOT LLVM_DIR)
+         set(LLVM_DIR "/usr/local/opt/llvm@4/lib/cmake/llvm")
+      endif()
+   endif()
+endif()
+
+
 find_package( Gperftools QUIET )
 if( GPERFTOOLS_FOUND )
     message( STATUS "Found gperftools; compiling tests with TCMalloc")
diff --git a/CMakeModules/EosioTesterBuild.cmake.in b/CMakeModules/EosioTesterBuild.cmake.in
index 5618fe0d149..04ac7da6fe5 100644
--- a/CMakeModules/EosioTesterBuild.cmake.in
+++ b/CMakeModules/EosioTesterBuild.cmake.in
@@ -8,6 +8,15 @@ set(EOSIO_VERSION "@VERSION_MAJOR@.@VERSION_MINOR@.@VERSION_PATCH@")
 
 enable_testing()
 
+if (UNIX)
+   if (APPLE)
+      if (LLVM_DIR STREQUAL "" OR NOT LLVM_DIR)
+         set(LLVM_DIR "/usr/local/opt/llvm@4/lib/cmake/llvm")
+      endif()
+   endif()
+endif()
+
+
 find_package( Gperftools QUIET )
 if( GPERFTOOLS_FOUND )
     message( STATUS "Found gperftools; compiling tests with TCMalloc")