diff --git a/misc/mc.ext.in b/misc/mc.ext.in
index f3450b1a3..21bb5cffb 100644
--- a/misc/mc.ext.in
+++ b/misc/mc.ext.in
@@ -448,6 +448,9 @@ regex/\.([aA][sS][fFxX])$
 regex/\.([dD][iI][vV][xX])$
 	Include=video
 
+regex/\.([mM][kK][vV])$
+	Include=video
+
 regex/\.([mM][oO][vV]|[qQ][tT])$
 	Include=video