diff --git a/core/odin/tokenizer/tokenizer.odin b/core/odin/tokenizer/tokenizer.odin
index 483589ad4..ab0c736d4 100644
--- a/core/odin/tokenizer/tokenizer.odin
+++ b/core/odin/tokenizer/tokenizer.odin
@@ -109,8 +109,10 @@ init :: proc(t: ^Tokenizer, src: string, path: string, err: Error_Handler = defa
 
 	if !intrinsics.atomic_load(&_global_keyword_lut_initialized) {
 		_global_keyword_spin_lock()
-		ok := keyword_lut_init(&global_keyword_lut)
-		intrinsics.atomic_store(&_global_keyword_lut_initialized, ok)
+		if !intrinsics.atomic_load(&_global_keyword_lut_initialized) {
+			ok := keyword_lut_init(&global_keyword_lut)
+			intrinsics.atomic_store(&_global_keyword_lut_initialized, ok)
+		}
 		_global_keyword_spin_unlock()
 	}