diff --git a/build_linux64/libamscimglib4.linux64.a b/build_linux64/libamscimglib4.linux64.a
index 70356a1..5687b4f 100644
Binary files a/build_linux64/libamscimglib4.linux64.a and b/build_linux64/libamscimglib4.linux64.a differ
diff --git a/build_linux64/libamscimglib4.linux64.so b/build_linux64/libamscimglib4.linux64.so
index e16bb9e..f95d8bd 100644
Binary files a/build_linux64/libamscimglib4.linux64.so and b/build_linux64/libamscimglib4.linux64.so differ
diff --git a/build_linux64/objstore/amscimglib4_image.o b/build_linux64/objstore/amscimglib4_image.o
index a0f1278..58a3e14 100644
Binary files a/build_linux64/objstore/amscimglib4_image.o and b/build_linux64/objstore/amscimglib4_image.o differ
diff --git a/build_linux64/objstore/amscimglib4_tests.o b/build_linux64/objstore/amscimglib4_tests.o
index 2f67644..4932087 100644
Binary files a/build_linux64/objstore/amscimglib4_tests.o and b/build_linux64/objstore/amscimglib4_tests.o differ
diff --git a/build_linux64/tests b/build_linux64/tests
index fd8511e..251d612 100644
Binary files a/build_linux64/tests and b/build_linux64/tests differ
diff --git a/build_mingw64/libamscimglib4.mingw64.dll b/build_mingw64/libamscimglib4.mingw64.dll
index ef450a2..2b8844a 100644
Binary files a/build_mingw64/libamscimglib4.mingw64.dll and b/build_mingw64/libamscimglib4.mingw64.dll differ
diff --git a/build_mingw64/objstore/amscimglib4_image.o b/build_mingw64/objstore/amscimglib4_image.o
index 43547ce..8c74c24 100644
Binary files a/build_mingw64/objstore/amscimglib4_image.o and b/build_mingw64/objstore/amscimglib4_image.o differ
diff --git a/build_mingw64/objstore/amscimglib4_tests.o b/build_mingw64/objstore/amscimglib4_tests.o
index 780654c..f61c112 100644
Binary files a/build_mingw64/objstore/amscimglib4_tests.o and b/build_mingw64/objstore/amscimglib4_tests.o differ
diff --git a/build_mingw64/tests.exe b/build_mingw64/tests.exe
index c065ba1..3690b62 100644
Binary files a/build_mingw64/tests.exe and b/build_mingw64/tests.exe differ
diff --git a/src/amscimglib4/amscimglib4_image.c b/src/amscimglib4/amscimglib4_image.c
index 332bdb2..8f8dd53 100644
--- a/src/amscimglib4/amscimglib4_image.c
+++ b/src/amscimglib4/amscimglib4_image.c
@@ -90,6 +90,21 @@ AMSCIMGLIB4_API int amscimglib4_image_resize(amscimglib4_image *imgptr, int _siz
         return amscimglib4_failure;
     }
 
+    //handle zero size images
+    if(_sizex<0) _sizex = 0;
+    if(_sizey<0) _sizey = 0;
+    if(_sizex == 0 || _sizey == 0)
+    {
+      imgptr->sizex = 0;
+      imgptr->sizey = 0;
+      if(imgptr->data != NULL)
+      {
+        free(imgptr->data);
+        imgptr->data = NULL;
+      }
+      return amscimglib4_success;
+    }
+
     newdata = (unsigned char*) malloc(sizeof(unsigned char)*4*_sizex*_sizey);
     if(newdata==NULL)
     {
@@ -109,7 +124,7 @@ AMSCIMGLIB4_API int amscimglib4_image_resize(amscimglib4_image *imgptr, int _siz
             newdata[4*(I+_sizex*J)+K] = imgptr->data[4*(I+imgptr->sizex*J)+K];
     }
 
-    free(imgptr->data);
+    if(imgptr->data != NULL) {free(imgptr->data); imgptr->data = NULL; }
     imgptr->data = newdata;
     imgptr->sizex = _sizex;
     imgptr->sizey = _sizey;
diff --git a/src/amscimglib4/amscimglib4_tests.c b/src/amscimglib4/amscimglib4_tests.c
index 505c316..4d733bf 100644
--- a/src/amscimglib4/amscimglib4_tests.c
+++ b/src/amscimglib4/amscimglib4_tests.c
@@ -19,6 +19,11 @@ void amscimglib4_test_init()
     
     res = amscimglib4_image_resize(img1,500,500); printf("res=%d (%d,%d)\n",res,img1->sizex,img1->sizey);
     res = amscimglib4_image_copy(img2,img1); printf("res=%d, img2=(%d,%d), img1=(%d,%d)\n",res, img2->sizex,img2->sizey,img1->sizex,img1->sizey);
+    res = amscimglib4_image_resize(img1,-10,3); printf("res=%d (%d,%d)\n",res,img1->sizex,img1->sizey);
+    res = amscimglib4_image_resize(img1,0,0); printf("res=%d (%d,%d)\n",res,img1->sizex,img1->sizey);
+    res = amscimglib4_image_copy(img2,img1); printf("res=%d, img2=(%d,%d), img1=(%d,%d)\n",res, img2->sizex,img2->sizey,img1->sizex,img1->sizey);
+    
+
 
     amscimglib4_image_delete(&img1);
     amscimglib4_image_delete(&img2);
diff --git a/src/main.cpp b/src/main.cpp
index e669072..19cc209 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,7 +5,7 @@ int main(int argc, char* argv[])
 {
     int ret = 0;
 
-    //amscimglib4_test_init();
+    amscimglib4_test_init();
     amscimglib4_test_loadsave();
 
     return ret;