diff --git a/shell/ash.c b/shell/ash.c
index 9eb395fd9..708ab21fb 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -1353,6 +1353,7 @@ static const struct builtincmd builtincmd[] = {
 	{ BUILTIN_SPEC_REG_ASSG "readonly", exportcmd },
 	{ BUILTIN_SPEC_REG      "return", returncmd },
 	{ BUILTIN_SPEC_REG      "set", setcmd },
+	{ BUILTIN_SPEC_REG      "source", dotcmd },
 	{ BUILTIN_SPEC_REG      "shift", shiftcmd },
 	{ BUILTIN_SPEC_REG      "times", timescmd },
 	{ BUILTIN_SPEC_REG      "trap", trapcmd },