diff --git a/src/library_glfw.js b/src/library_glfw.js
index b8325f502dd99..ced031908132b 100644
--- a/src/library_glfw.js
+++ b/src/library_glfw.js
@@ -959,6 +959,7 @@ var LibraryGLFW = {
       if (!win) return;
 
       if (GLFW.active.id == win.id) {
+        {{{ runtimeKeepalivePush() }}}
         if (width == screen.width && height == screen.height) {
           Browser.requestFullscreen();
         } else {
@@ -967,6 +968,7 @@ var LibraryGLFW = {
           win.width = width;
           win.height = height;
         }
+        {{{ runtimeKeepalivePop() }}}
       }
 
       if (!win.windowSizeFunc) return;
diff --git a/tests/glfw3.c b/tests/glfw3.c
index 41da337dc7425..a2e0f8d6d456f 100644
--- a/tests/glfw3.c
+++ b/tests/glfw3.c
@@ -41,6 +41,13 @@ assert(glfwSet##Function(Value) == Value); /* The previously set callback */
 assert(glfwSet##Function(Window, Value) == NULL);  /* Default value (no callback was set) */ \
 assert(glfwSet##Function(Window, Value) == Value); /* The previously set callback */
 
+static int exited = 0;
+
+__attribute__((destructor))
+void onExit() {
+    exited = 1;
+}
+
 int main()
 {
     GLFWwindow *window;
@@ -121,9 +128,11 @@ int main()
         glfwSetWindowSize(window, 1, 1);
         glfwGetWindowSize(window, &w, &h);
         assert(w == 1 && h == 1);
+        assert(exited == 0);
 
         glfwSetWindowSize(window, 640, 480);
         glfwGetFramebufferSize(window, &w, &h);
+        assert(exited == 0);
 
         // XXX: not implemented
         // glfwIconifyWindow(window);
diff --git a/tests/test_browser.py b/tests/test_browser.py
index 70b43e31ee389..aa40b86eb6cbe 100644
--- a/tests/test_browser.py
+++ b/tests/test_browser.py
@@ -2864,7 +2864,7 @@ def in_html(expected):
     'gl_es': (['-DCLIENT_API=GLFW_OPENGL_ES_API'],)
   })
   def test_glfw3(self, args):
-    for opts in [[], ['-sLEGACY_GL_EMULATION'], ['-Os', '--closure=1']]:
+    for opts in [[], ['-sEXIT_RUNTIME=1'], ['-sLEGACY_GL_EMULATION'], ['-Os', '--closure=1']]:
       print(opts)
       self.btest(test_file('glfw3.c'), args=['-sUSE_GLFW=3', '-lglfw', '-lGL'] + args + opts, expected='1')