diff --git a/kiva/agg/src/agg_typemaps.i b/kiva/agg/src/agg_typemaps.i
index f7c728706..437e548cb 100644
--- a/kiva/agg/src/agg_typemaps.i
+++ b/kiva/agg/src/agg_typemaps.i
@@ -83,7 +83,7 @@
 }
 
 // --------------------------------------------------------------------------
-// Typemaps for (int* results, int Nresults)
+// Typemaps for (unsigned char* results, int Nresults)
 //
 //    For: points_in_polygon
 //
@@ -91,10 +91,10 @@
 //
 // --------------------------------------------------------------------------
 
-%typemap(in) (int* results, int Nresults) (PyArrayObject* ary=NULL,
+%typemap(in) (unsigned char* results, int Nresults) (PyArrayObject* ary=NULL,
                                            int is_new_object)
 {
-    ary = obj_to_array_contiguous_allow_conversion($input, PyArray_INT,
+    ary = obj_to_array_contiguous_allow_conversion($input, PyArray_BOOL,
                                                    is_new_object);
     int size[1] = {-1};
     if (!ary ||
@@ -103,11 +103,11 @@
     {
         goto fail;
     }
-    $1 = (int*) ary->data;
+    $1 = (unsigned char*) ary->data;
     $2 = ary->dimensions[0];
 }
 
-%typemap(freearg) (int* results, int Nresults)
+%typemap(freearg) (unsigned char* results, int Nresults)
 {
     if (is_new_object$argnum)
     {
diff --git a/kiva/agg/src/hit_test.i b/kiva/agg/src/hit_test.i
index 295c9a8ed..95fe1f350 100644
--- a/kiva/agg/src/hit_test.i
+++ b/kiva/agg/src/hit_test.i
@@ -7,18 +7,18 @@
 
 %apply (double* point_array, int point_count) {(double* pts, int Npts)};
 %apply (double* point_array, int point_count) {(double* poly_pts, int Npoly_pts)};
-%apply (int* results, int Nresults) {(int* results, int Nresults)};
+%apply (unsigned char* results, int Nresults) {(unsigned char* results, int Nresults)};
 
 namespace kiva
 {
     bool point_in_polygon(double x, double y, double* poly_pts, int Npoly_pts);
     void points_in_polygon(double* pts, int Npts, 
                           double* poly_pts, int Npoly_pts,
-                          int* results, int Nresults);
+                          unsigned char* results, int Nresults);
     bool point_in_polygon_winding(double x, double y, double* poly_pts, int Npoly_pts);
     void points_in_polygon_winding(double* pts, int Npts, 
                           double* poly_pts, int Npoly_pts,
-                          int* results, int Nresults);
+                          unsigned char* results, int Nresults);
 }
 
 %pythoncode
@@ -88,7 +88,7 @@ def points_in_polygon(pts, poly_pts, use_winding=False):
         else:
             raise ValueError('poly_pts must be an Nx2 or 2xN array')
 
-    results = zeros(len(pts),int32)
+    results = zeros(len(pts), bool)
     if use_winding:
         _agg.points_in_polygon_winding(pts, poly_pts, results)
     else:
diff --git a/kiva/agg/src/kiva_hit_test.cpp b/kiva/agg/src/kiva_hit_test.cpp
index bc17b1ba2..a22dc3716 100644
--- a/kiva/agg/src/kiva_hit_test.cpp
+++ b/kiva/agg/src/kiva_hit_test.cpp
@@ -64,7 +64,7 @@ namespace kiva
 
     void points_in_polygon(double* pts, int Npts,
                           double* poly_pts, int Npoly_pts,
-                          int* results, int Nresults)
+                          unsigned char* results, int Nresults)
     {
         // Nresults and Npts should match.
 
@@ -136,7 +136,7 @@ namespace kiva
 
     void points_in_polygon_winding(double* pts, int Npts,
                           double* poly_pts, int Npoly_pts,
-                          int* results, int Nresults)
+                          unsigned char* results, int Nresults)
     {
         // Nresults and Npts should match.
 
diff --git a/kiva/agg/src/kiva_hit_test.h b/kiva/agg/src/kiva_hit_test.h
index 11bea0013..c5f5dab48 100644
--- a/kiva/agg/src/kiva_hit_test.h
+++ b/kiva/agg/src/kiva_hit_test.h
@@ -7,12 +7,12 @@ namespace kiva
                           double* poly_pts, int Npoly_pts);
     void points_in_polygon(double* pts, int Npts, 
                           double* poly_pts, int Npoly_pts,
-                          int* results, int Nresults);
+                          unsigned char* results, int Nresults);
     bool point_in_polygon_winding(double x, double y, 
                                   double* poly_pts, int Npoly_pts);
     void points_in_polygon_winding(double* pts, int Npts, 
                                    double* poly_pts, int Npoly_pts,
-                                   int* results, int Nresults);
+                                   unsigned char* results, int Nresults);
 	    		  
 }
 #endif