diff --git a/canny_edge_machine.cpp b/canny_edge_machine.cpp
index d9eaa3c..58c5e3c 100644
--- a/canny_edge_machine.cpp
+++ b/canny_edge_machine.cpp
@@ -31,6 +31,12 @@ class CannyEdgeMachine {
     double t_low;
     double t_high;
     
+    double gauss(int x, int y, double sigma) {
+      // e^-((x^2 + y^2)/(sigma^2))
+      double upper_part = pow(M_E, (-1.0) * ( (pow(x, 2)+pow(y, 2))/pow(sigma, 2) ) );
+      return upper_part;
+    };
+    
   public:
     CannyEdgeMachine(LazyImage* original, LazyImage* working_copy){
       this->original = original;
@@ -75,12 +81,6 @@ class CannyEdgeMachine {
       }
     };
     
-    double gauss(int x, int y, double sigma) {
-      // e^-((x^2 + y^2)/(sigma^2))
-      double upper_part = pow(M_E, (-1.0) * ( (pow(x, 2)+pow(y, 2))/pow(sigma, 2) ) );
-      return upper_part;
-    };
-    
     void doGaussBlur(void) {
       int filter_width = this->filter_size;
       double sigma = this->filter_sigma;