diff --git a/src/log.h b/src/log.h
index 53e481b..c1b47e3 100644
--- a/src/log.h
+++ b/src/log.h
@@ -171,7 +171,7 @@ INT_ENTRY(uint16_t)
 INT_ENTRY(uint32_t)
 INT_ENTRY(uint64_t)
 
-#ifdef __clang__
+#ifdef __APPLE__
 INT_ENTRY(long)
 INT_ENTRY(unsigned long)
 #endif