diff --git a/rtengine/color.cc b/rtengine/color.cc
index b67343b82..acb50eae5 100644
--- a/rtengine/color.cc
+++ b/rtengine/color.cc
@@ -1530,7 +1530,7 @@ void Color::interpolateRGBColor (float realL, float iplow, float iphigh, int alg
                                  int toDo, const double xyz_rgb[3][3], const double rgb_xyz[3][3], float &ro, float &go, float &bo)
 {
     float X1, Y1, Z1, X2, Y2, Z2, X, Y, Z, XL, YL, ZL;
-    float L1, L2, LL, a_1 = 0.f, b_1 = 0.f, a_2, b_2, a_L, b_L;
+    float L1 = 0.f, L2, LL, a_1 = 0.f, b_1 = 0.f, a_2, b_2, a_L, b_L;
 
     // converting color 1 to Lab  (image)
     Color::rgbxyz(r1, g1, b1, X1, Y1, Z1, xyz_rgb);
diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 6e8f479be..93a23d692 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -4634,7 +4634,7 @@ void ImProcFunctions::rgbProc (Imagefloat* working, LabImage* lab, PipetteBuffer
             else if (params->colorToning.method == "Lab"  && opautili) {
                 int algm = 0;
                 bool twocol = true;
-                int metchrom;
+                int metchrom = 0;
 
                 if      (params->colorToning.twocolor == "Std"  ) {
                     metchrom = 0;
diff --git a/rtengine/previewimage.cc b/rtengine/previewimage.cc
index 4d0fd59b6..1bf11dc17 100644
--- a/rtengine/previewimage.cc
+++ b/rtengine/previewimage.cc
@@ -71,9 +71,7 @@ PreviewImage::PreviewImage (const Glib::ustring &fname, const Glib::ustring &ext
                 int w, h;
                 double scale = 1.;
 
-                if (tpp) {
-                    tpp->getDimensions(w, h, scale);
-                }
+                tpp->getDimensions(w, h, scale);
 
                 previewImage = Cairo::ImageSurface::create(Cairo::FORMAT_RGB24, w, h);
                 previewImage->flush();
diff --git a/rtexif/kodakattribs.cc b/rtexif/kodakattribs.cc
index c92be3a84..f2d6e84dd 100644
--- a/rtexif/kodakattribs.cc
+++ b/rtexif/kodakattribs.cc
@@ -20,7 +20,6 @@ void parseKodakIfdTextualInfo(Tag *textualInfo, Tag* exif_)
 
     TagDirectory *exif = exif_->getDirectory();
     char *value = (char *)textualInfo->getValue();
-    int valuesize = textualInfo->getValueSize();
 
     char *p = value;
     char *pc, *plf;