diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 3edc1a2..a59bbd1 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2140,8 +2140,8 @@
 
 #ifdef FEAT_WINDOWS
 	/* :wincmd range depends on the argument. */
-	if (ea.cmdidx == CMD_wincmd)
-	    get_wincmd_addr_type(p, &ea);
+	if (ea.cmdidx == CMD_wincmd && p != NULL)
+	    get_wincmd_addr_type(skipwhite(p), &ea);
 #endif
     }