diff --git a/hyper.h b/hyper.h
index 39473a4c..75a19cbd 100644
--- a/hyper.h
+++ b/hyper.h
@@ -1750,7 +1750,7 @@ void resetGeometry();
 
 namespace svg {
   void circle(int x, int y, int size, color_t col);
-  void polygon(int *polyx, int *polyy, int polyi, color_t col, int outline, double linewidth);
+  void polygon(int *polyx, int *polyy, int polyi, color_t col, color_t outline, double linewidth);
   void text(int x, int y, int size, const string& str, bool frame, color_t col, int align);
   extern bool in;
   extern string link;
@@ -2544,7 +2544,7 @@ struct dqi_poly : drawqueueitem {
   transmatrix V;
   const vector<glvertex> *tab;
   int offset, cnt;
-  int outline;
+  color_t outline;
   double linewidth;
   int flags;
   textureinfo *tinf;
diff --git a/screenshot.cpp b/screenshot.cpp
index 2a8ba553..7d02cd1a 100644
--- a/screenshot.cpp
+++ b/screenshot.cpp
@@ -136,7 +136,7 @@ namespace svg {
       }
     }
   
-  void polygon(int *polyx, int *polyy, int polyi, color_t col, int outline, double linewidth) {
+  void polygon(int *polyx, int *polyy, int polyi, color_t col, color_t outline, double linewidth) {
   
     if(invisible(col) && invisible(outline)) return;
     if(polyi < 2) return;