diff --git a/headers/posix/complex.h b/headers/posix/complex.h
index cfdf0bfb93..1e1e92c272 100644
--- a/headers/posix/complex.h
+++ b/headers/posix/complex.h
@@ -15,6 +15,10 @@
 #define complex _Complex
 #define I _Complex_I
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 extern double               cabs(double complex);
 extern float                cabsf(float complex);
 extern long double          cabsl(long double complex);
@@ -82,4 +86,8 @@ extern float complex        ctanhf(float complex);
 extern long double complex  ctanhl(long double complex);
 extern long double complex  ctanl(long double complex);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif	/* _COMPLEX_H_ */