diff --git a/src/wgl_context.c b/src/wgl_context.c
index 51916e57..0ffe2cfc 100644
--- a/src/wgl_context.c
+++ b/src/wgl_context.c
@@ -67,7 +67,7 @@ static int choosePixelFormat(_GLFWwindow* window,
 {
     _GLFWfbconfig* usableConfigs;
     const _GLFWfbconfig* closest;
-    int i, pixelFormat, nativeCount, usableCount, attribCount;
+    int i, pixelFormat, nativeCount, usableCount = 0, attribCount = 0;
     int attribs[40];
     int values[sizeof(attribs) / sizeof(attribs[0])];
 
@@ -83,8 +83,6 @@ static int choosePixelFormat(_GLFWwindow* window,
             return 0;
         }
 
-        attribCount = 0;
-
         addAttrib(WGL_SUPPORT_OPENGL_ARB);
         addAttrib(WGL_DRAW_TO_WINDOW_ARB);
         addAttrib(WGL_PIXEL_TYPE_ARB);
@@ -131,7 +129,6 @@ static int choosePixelFormat(_GLFWwindow* window,
     }
 
     usableConfigs = calloc(nativeCount, sizeof(_GLFWfbconfig));
-    usableCount = 0;
 
     for (i = 0;  i < nativeCount;  i++)
     {