diff --git a/examples/opengl2_example/imgui_impl_glfw_gl2.cpp b/examples/opengl2_example/imgui_impl_glfw_gl2.cpp
index 259e5a2a..f78b77be 100644
--- a/examples/opengl2_example/imgui_impl_glfw_gl2.cpp
+++ b/examples/opengl2_example/imgui_impl_glfw_gl2.cpp
@@ -134,7 +134,7 @@ void ImGui_ImplGlfwGL2_RenderDrawData(ImDrawData* draw_data)
     glMatrixMode(GL_PROJECTION);
     glPopMatrix();
     glPopAttrib();
-    glPolygonMode(GL_FRONT, last_polygon_mode[0]); glPolygonMode(GL_BACK, last_polygon_mode[1]);
+    glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
 }
diff --git a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp
index 84c1118b..72cc4bf6 100644
--- a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp
+++ b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp
@@ -158,7 +158,7 @@ void ImGui_ImplGlfwGL3_RenderDrawData(ImDrawData* draw_data)
     if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
     if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
     if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
-    glPolygonMode(GL_FRONT_AND_BACK, last_polygon_mode[0]);
+    glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
 }
diff --git a/examples/sdl_opengl2_example/imgui_impl_sdl_gl2.cpp b/examples/sdl_opengl2_example/imgui_impl_sdl_gl2.cpp
index c99aaa08..c7eeaa91 100644
--- a/examples/sdl_opengl2_example/imgui_impl_sdl_gl2.cpp
+++ b/examples/sdl_opengl2_example/imgui_impl_sdl_gl2.cpp
@@ -125,7 +125,7 @@ void ImGui_ImplSdlGL2_RenderDrawData(ImDrawData* draw_data)
     glMatrixMode(GL_PROJECTION);
     glPopMatrix();
     glPopAttrib();
-    glPolygonMode(GL_FRONT, last_polygon_mode[0]); glPolygonMode(GL_BACK, last_polygon_mode[1]);
+    glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
 }
diff --git a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
index f9c4be03..4b870ade 100644
--- a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
+++ b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
@@ -150,7 +150,7 @@ void ImGui_ImplSdlGL3_RenderDrawData(ImDrawData* draw_data)
     if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
     if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
     if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
-    glPolygonMode(GL_FRONT_AND_BACK, last_polygon_mode[0]);
+    glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
 }