diff --git a/src/gap_all.h b/src/gap_all.h
index 1c69e2810a..6d6a1e6d61 100644
--- a/src/gap_all.h
+++ b/src/gap_all.h
@@ -88,6 +88,10 @@ extern "C" {
 #include "hpc/traverse.h"
 #endif
 
+#ifdef USE_JULIA_GC
+#include "julia_gc.h"
+#endif
+
 #ifdef __cplusplus
 } // extern "C"
 #endif