diff --git a/src/include/ngspice/memory.h b/src/include/ngspice/memory.h
index 87bd8229d..2f9767e8d 100644
--- a/src/include/ngspice/memory.h
+++ b/src/include/ngspice/memory.h
@@ -36,11 +36,6 @@ extern void txfree(void *ptr);
 #define ZERO(PTR, TYPE)  bzero(PTR, sizeof(TYPE))
 
 
-#if defined(_MSC_VER) || defined(__MINGW32__)
-void *hrealloc(void *ptr, size_t num);
-#endif
-
-
 #ifdef CIDER
 
 #define RALLOC(ptr, type, number)                                       \