diff --git a/src/ex_getln.c b/src/ex_getln.c
index 3f1ea71..3bf78db 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -5686,7 +5686,7 @@
 	histype1 = get_histtype(arg);
 	if (histype1 == -1)
 	{
-	    if (STRICMP(arg, "all") == 0)
+	    if (STRNICMP(arg, "all", STRLEN(arg)) == 0)
 	    {
 		histype1 = 0;
 		histype2 = HIST_COUNT-1;