diff --git a/Source/GSFormat.m b/Source/GSFormat.m
index b66c4c2bd..78026af31 100644
--- a/Source/GSFormat.m
+++ b/Source/GSFormat.m
@@ -50,6 +50,9 @@
 #  endif
 #endif
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/GSString.m b/Source/GSString.m
index 34ce9779c..354c1e96c 100644
--- a/Source/GSString.m
+++ b/Source/GSString.m
@@ -48,6 +48,9 @@
 
 #import "GSPrivate.h"
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/NSConnection.m b/Source/NSConnection.m
index c210ef7cd..4821f15ed 100644
--- a/Source/NSConnection.m
+++ b/Source/NSConnection.m
@@ -68,6 +68,9 @@
 
 #define	EXPOSE_NSDistantObject_IVARS	1
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/NSException.m b/Source/NSException.m
index df7e24798..a51f5d146 100644
--- a/Source/NSException.m
+++ b/Source/NSException.m
@@ -40,6 +40,9 @@
 #import "Foundation/NSValue.h"
 #import "GNUstepBase/NSString+GNUstepBase.h"
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/NSMethodSignature.m b/Source/NSMethodSignature.m
index 51fea87e9..6bcdf7cf5 100644
--- a/Source/NSMethodSignature.m
+++ b/Source/NSMethodSignature.m
@@ -36,6 +36,9 @@
 
 #import "GSInvocation.h"
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/NSString.m b/Source/NSString.m
index 6d59da438..b73db8f37 100644
--- a/Source/NSString.m
+++ b/Source/NSString.m
@@ -88,6 +88,9 @@
 #include <stdio.h>
 #include <wchar.h>
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/callframe.m b/Source/callframe.m
index b59b33140..0e37a25ba 100644
--- a/Source/callframe.m
+++ b/Source/callframe.m
@@ -25,6 +25,9 @@
 
 #import "common.h"
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
diff --git a/Source/cifframe.m b/Source/cifframe.m
index 23c0b441a..3a35e55d5 100644
--- a/Source/cifframe.m
+++ b/Source/cifframe.m
@@ -25,6 +25,9 @@
 
 #import "common.h"
 
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif