Index: /trunk/psModules/src/imcombine/pmSubtractionSimple.c
===================================================================
--- /trunk/psModules/src/imcombine/pmSubtractionSimple.c	(revision 35816)
+++ /trunk/psModules/src/imcombine/pmSubtractionSimple.c	(revision 35817)
@@ -76,6 +76,6 @@
   // We've already validated the input values at this level
   float sig2fwhm = 2.0 * sqrt(2.0 * log(2.0));
-  float fwhm1,fwhm2;
-  float sigma1,sigma2,sigmaKern;
+  float fwhm1 = 0,fwhm2 = 0;
+  float sigma1 = 0,sigma2 = 0,sigmaKern = 0;
   float chisq = 1.0;
   int convolution_direction = 0;