diff --git a/Source/Additions/NSObject+GNUstepBase.m b/Source/Additions/NSObject+GNUstepBase.m
index 5201895c8..f82d60cd7 100644
--- a/Source/Additions/NSObject+GNUstepBase.m
+++ b/Source/Additions/NSObject+GNUstepBase.m
@@ -31,7 +31,9 @@
 #import "GNUstepBase/NSDebug+GNUstepBase.h"
 #import "GNUstepBase/NSThread+GNUstepBase.h"
 
+#ifdef HAVE_MALLOC_H
 #include	<malloc.h>
+#endif
 
 /* This file contains methods which nominally return an id but in fact
  * always rainse an exception and never return.
diff --git a/Source/NSDebug.m b/Source/NSDebug.m
index 0de65d890..86c2e3efb 100644
--- a/Source/NSDebug.m
+++ b/Source/NSDebug.m
@@ -48,7 +48,9 @@
 #include        <execinfo.h>
 #endif
 
+#ifdef HAVE_MALLOC_H
 #include        <malloc.h>
+#endif
 
 typedef struct {
   Class		class;
diff --git a/Source/NSObject.m b/Source/NSObject.m
index 48358b5fb..bb933f9f6 100644
--- a/Source/NSObject.m
+++ b/Source/NSObject.m
@@ -53,7 +53,9 @@
 #include <locale.h>
 #endif
 
+#ifdef HAVE_MALLOC_H
 #include	<malloc.h>
+#endif
 
 #import "GSPThread.h"