diff --git a/src/os_unix.c b/src/os_unix.c
index 57eb050..f2f2ca4 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -3940,7 +3940,7 @@
      */
     for (i = 0; i < 2; ++i)
     {
-	p = cmd;
+	p = skipwhite(cmd);
 	inquote = FALSE;
 	*argc = 0;
 	for (;;)