diff --git a/tools/wltests/test_series b/tools/wltests/test_series
index 2466f271d0eccba55ae6189df1adbd3e7ec50e59..e9bb9f9e42bd717e4ce6da28dde29ae9a1956207 100755
--- a/tools/wltests/test_series
+++ b/tools/wltests/test_series
@@ -943,8 +943,22 @@ COMMIT_ID=1
 # Here we read from an arbitrary file descriptor 10 to avoid overlaps with
 # stdin generated by the adb commands in the loop body
 while read -u10 COMMITS; do
-	# Extract SHA1 from commit description
-	COMMIT_SHA1=${COMMITS%% *}
+	# Extract commit identifier from commit description
+	COMMIT=${COMMITS%% *}
+
+	# Translate possible branch name to SHA1
+	COMMITS=$(git -C $KERNEL_SRC show-ref -s $COMMIT)
+	if [ $? -ne 0 ]; then
+		COMMIT_SHA1=$COMMIT
+	elif [ $(echo $COMMITS | wc -w) -eq 1 ]; then
+		COMMIT_SHA1=$COMMITS
+	else
+		c_error "The branch name must be univocal, \"$COMMIT\" may refer to:"
+		for b in $(git -C $KERNEL_SRC show-ref $COMMIT | cut -f 2 -d " "); do
+			c_error "    $b"
+		done
+		exit $EINVAL
+	fi
 
 	box_out "PROGRESS : $COMMIT_ID/$COMMITS_COUNT" \
 		"COMMIT   : $COMMITS"