diff --git a/hydrogen.h b/hydrogen.h
index 76831a1..e7b94c1 100644
--- a/hydrogen.h
+++ b/hydrogen.h
@@ -7,9 +7,11 @@
 #include <stdlib.h>
 #endif
 
+#ifndef __cplusplus
 #ifdef __GNUC__
 #pragma GCC diagnostic ignored "-Wdeclaration-after-statement"
 #endif
+#endif
 
 #ifdef __cplusplus
 #ifdef __GNUC__