diff --git a/mandelbrot.c b/mandelbrot.c
index 46e206167d68e8185cb55488e81eea7f36352771..cb5eff678685abd826d5cf49da9861adf0031333 100644
--- a/mandelbrot.c
+++ b/mandelbrot.c
@@ -16,8 +16,8 @@ int main()
 {
          /* screen ( integer) coordinate */
        int iX,iY;
-       const int iXmax = 4000;
-       const int iYmax = 4000;
+       const int iXmax = 3000;
+       const int iYmax = 3000;
        /* world ( double) coordinate = parameter plane*/
        double Cx,Cy;
        const double CxMin=-2.5;