diff --git a/rtengine/rtthumbnail.cc b/rtengine/rtthumbnail.cc
index 4b0baa685..2a35176e6 100644
--- a/rtengine/rtthumbnail.cc
+++ b/rtengine/rtthumbnail.cc
@@ -1167,7 +1167,7 @@ IImage8* Thumbnail::processImage (const procparams::ProcParams& params, eSensorT
 
     Imagefloat* baseImg = resizeTo<Imagefloat> (rwidth, rheight, interp, thumbImg);
 
-    if(isRaw && params.filmNegative.enabled) {
+    if (isRaw && params.filmNegative.enabled) {
         processFilmNegative(params, baseImg, rwidth, rheight, rmi, gmi, bmi);
     }