diff --git a/include/patomic/types/ops/implicit.h b/include/patomic/types/ops/implicit.h
index b64afa8ec..acf634988 100644
--- a/include/patomic/types/ops/implicit.h
+++ b/include/patomic/types/ops/implicit.h
@@ -1,7 +1,9 @@
 #ifndef PATOMIC_OPS_IMPLICIT_H
 #define PATOMIC_OPS_IMPLICIT_H
 
-// TODO: extern C
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 
 /**
@@ -486,4 +488,8 @@ typedef struct {
 } patomic_ops_t;
 
 
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
 #endif  /* PATOMIC_OPS_IMPLICIT_H */