diff --git a/CMakeLists.txt b/CMakeLists.txt
index 338eac40..0eaa463b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -205,14 +205,14 @@ endif()
 
 # ASAN
 if (ASAN)
+    if (NOT CRTLIB)
+        message(FATAL_ERROR "CRTLIB (C runtime library) Must be enabled when compiling with ASAN")
+    endif()
     set(COMPILER_FLAGS "${COMPILER_FLAGS} -fsanitize=address -DASAN=1")
 endif()
 
 # Developer mode
 if(DEVELOPER)
-    if (NOT CRTLIB)
-        message(FATAL_ERROR "CRTLIB (C runtime library) Must be enabled when compiling with ASAN")
-    endif()
     set(COMPILER_FLAGS "${COMPILER_FLAGS} -DDEVELOPER=1")
 endif()