diff --git a/xkb/ddxLoad.c b/xkb/ddxLoad.c
index b1d629436..5e6ab8770 100644
--- a/xkb/ddxLoad.c
+++ b/xkb/ddxLoad.c
@@ -103,7 +103,7 @@ Win32System(const char *cmdline)
     STARTUPINFO si;
     PROCESS_INFORMATION pi;
     DWORD dwExitCode;
-    char *cmd = xstrdup(cmdline);
+    char *cmd = strdup(cmdline);
 
     ZeroMemory( &si, sizeof(si) );
     si.cb = sizeof(si);
@@ -235,6 +235,11 @@ XkbDDXCompileKeymapByNames(	XkbDescPtr		xkb,
 		  xkm_output_dir, keymap);
 
     free(xkbbasedirflag);
+
+    if (!buf) {
+        LogMessage(X_ERROR, "XKB: Could not invoke xkbcomp: not enough memory\n");
+        return FALSE;
+    }
     
 #ifndef WIN32
     out= Popen(buf,"w");