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
     }
 
diff --git a/src/version.c b/src/version.c
index e6ab37e..cdde7ca 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    580,
+/**/
     579,
 /**/
     578,