diff --git a/src/u_blame.pas b/src/u_blame.pas
index 41832282..d472651c 100644
--- a/src/u_blame.pas
+++ b/src/u_blame.pas
@@ -236,7 +236,7 @@ begin
     line:= gitLines[i];
     rng := TStringRange.create(line);
     // hash
-    tmp := rng.takeUntil(' ').yield();
+    tmp := rng.takeUntil(' ').yield().ToLower();
     fDocData.lineData[i].hash := tmp;
     rng.popFront();
     // optional filename