diff --git a/packages/fcl-image/src/freetype.pp b/packages/fcl-image/src/freetype.pp
index d0cb181f98..a6bbdfacc8 100644
--- a/packages/fcl-image/src/freetype.pp
+++ b/packages/fcl-image/src/freetype.pp
@@ -399,7 +399,9 @@ end;
 
 procedure TFontManager.SetExtension (AValue : string);
 begin
-  if AValue <> '' then
+  if AValue = '' then
+    FExtension:=''
+  else
     if AValue[1] <> '.' then
       FExtension := '.' + AValue
     else