diff --git a/src/util/slab.h b/src/util/slab.h
index 5a25adaf7f4..f9e7d4754fe 100644
--- a/src/util/slab.h
+++ b/src/util/slab.h
@@ -44,6 +44,10 @@
 
 #include "c11/threads.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct slab_element_header;
 struct slab_page_header;
 
@@ -91,4 +95,8 @@ void slab_destroy(struct slab_mempool *mempool);
 void *slab_alloc_st(struct slab_mempool *mempool);
 void slab_free_st(struct slab_mempool *mempool, void *ptr);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif