diff --git a/Include/internal/pycore_mimalloc.h b/Include/internal/pycore_mimalloc.h
index d10b01d5b49b19..d870d01beb702c 100644
--- a/Include/internal/pycore_mimalloc.h
+++ b/Include/internal/pycore_mimalloc.h
@@ -36,9 +36,18 @@ typedef enum {
 #  define MI_TSAN 1
 #endif
 
+#ifdef __cplusplus
+extern "C++" {
+#endif
+
 #include "mimalloc/mimalloc.h"
 #include "mimalloc/mimalloc/types.h"
 #include "mimalloc/mimalloc/internal.h"
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 
 #ifdef Py_GIL_DISABLED