diff --git a/src/glcontext_eagl.mm b/src/glcontext_eagl.mm
index 14ae30532..50326a6c1 100644
--- a/src/glcontext_eagl.mm
+++ b/src/glcontext_eagl.mm
@@ -102,7 +102,7 @@ namespace bgfx { namespace gl
 			GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
 
 			GLenum err = glCheckFramebufferStatus(GL_FRAMEBUFFER);
-			BX_CHECK(GL_FRAMEBUFFER_COMPLETE == err, "glCheckFramebufferStatus failed 0x%08x", err);
+			BX_ASSERT(GL_FRAMEBUFFER_COMPLETE == err, "glCheckFramebufferStatus failed 0x%08x", err);
 			BX_UNUSED(err);
 
 			makeCurrent();
@@ -162,7 +162,7 @@ namespace bgfx { namespace gl
 	void GlContext::create(uint32_t _width, uint32_t _height)
 	{
 		s_opengles = bx::dlopen("/System/Library/Frameworks/OpenGLES.framework/OpenGLES");
-		BX_CHECK(NULL != s_opengles, "OpenGLES dynamic library is not found!");
+		BX_ASSERT(NULL != s_opengles, "OpenGLES dynamic library is not found!");
 
 		BX_UNUSED(_width, _height);
 		CAEAGLLayer* layer = (__bridge CAEAGLLayer*)g_platformData.nwh;
@@ -185,7 +185,7 @@ namespace bgfx { namespace gl
 				context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
 			}
 		}
-		BX_CHECK(NULL != context, "No valid OpenGLES context.");
+		BX_ASSERT(NULL != context, "No valid OpenGLES context.");
 
 		m_context = (__bridge void*)context;
 		[EAGLContext setCurrentContext:context];
@@ -212,7 +212,7 @@ namespace bgfx { namespace gl
 		GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
 		GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
 
-		BX_CHECK(GL_FRAMEBUFFER_COMPLETE ==  glCheckFramebufferStatus(GL_FRAMEBUFFER)
+		BX_ASSERT(GL_FRAMEBUFFER_COMPLETE ==  glCheckFramebufferStatus(GL_FRAMEBUFFER)
 			, "glCheckFramebufferStatus failed 0x%08x"
 			, glCheckFramebufferStatus(GL_FRAMEBUFFER)
 			);
@@ -298,7 +298,7 @@ namespace bgfx { namespace gl
 		GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
 		GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
 
-		BX_CHECK(GL_FRAMEBUFFER_COMPLETE ==  glCheckFramebufferStatus(GL_FRAMEBUFFER)
+		BX_ASSERT(GL_FRAMEBUFFER_COMPLETE ==  glCheckFramebufferStatus(GL_FRAMEBUFFER)
 			, "glCheckFramebufferStatus failed 0x%08x"
 			, glCheckFramebufferStatus(GL_FRAMEBUFFER)
 			);
diff --git a/src/glcontext_nsgl.mm b/src/glcontext_nsgl.mm
index b165a7f9a..4e78b1670 100644
--- a/src/glcontext_nsgl.mm
+++ b/src/glcontext_nsgl.mm
@@ -64,7 +64,7 @@ namespace bgfx { namespace gl
 		BX_UNUSED(_width, _height);
 
 		s_opengl = bx::dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL");
-		BX_CHECK(NULL != s_opengl, "OpenGL dynamic library is not found!");
+		BX_ASSERT(NULL != s_opengl, "OpenGL dynamic library is not found!");
 
 		const AutoreleasePoolHolder pool;
 		NSObject* nwh = (NSObject*)g_platformData.nwh;
diff --git a/src/renderer_mtl.mm b/src/renderer_mtl.mm
index efd6ae0e6..3d1a1c6f5 100644
--- a/src/renderer_mtl.mm
+++ b/src/renderer_mtl.mm
@@ -345,7 +345,7 @@ namespace bgfx { namespace mtl
 			break;
 		};
 
-		BX_CHECK(false, "Unrecognized Mtl Data type 0x%04x.", _type);
+		BX_ASSERT(false, "Unrecognized Mtl Data type 0x%04x.", _type);
 		return UniformType::End;
 	}
 
@@ -855,7 +855,7 @@ namespace bgfx { namespace mtl
 			m_cmd.kick(false, true);
 			m_commandBuffer = m_cmd.alloc();
 
-			BX_CHECK(_mip<texture.m_numMips,"Invalid mip: %d num mips:",_mip,texture.m_numMips);
+			BX_ASSERT(_mip<texture.m_numMips,"Invalid mip: %d num mips:",_mip,texture.m_numMips);
 
 			uint32_t srcWidth  = bx::uint32_max(1, texture.m_ptr.width()  >> _mip);
 			uint32_t srcHeight = bx::uint32_max(1, texture.m_ptr.height() >> _mip);
@@ -1075,7 +1075,7 @@ namespace bgfx { namespace mtl
 				break;
 
 			default:
-				BX_CHECK(false, "Invalid handle type?! %d", _handle.type);
+				BX_ASSERT(false, "Invalid handle type?! %d", _handle.type);
 				break;
 			}
 		}
@@ -1807,8 +1807,8 @@ namespace bgfx { namespace mtl
 						if (arg.type == MTLArgumentTypeBuffer
 						&&  0 == bx::strCmp(utf8String(arg.name), SHADER_UNIFORM_NAME) )
 						{
-							BX_CHECK( arg.index == 0, "Uniform buffer must be in the buffer slot 0.");
-							BX_CHECK( MTLDataTypeStruct == arg.bufferDataType, "%s's type must be a struct",SHADER_UNIFORM_NAME );
+							BX_ASSERT( arg.index == 0, "Uniform buffer must be in the buffer slot 0.");
+							BX_ASSERT( MTLDataTypeStruct == arg.bufferDataType, "%s's type must be a struct",SHADER_UNIFORM_NAME );
 
 							if (MTLDataTypeStruct == arg.bufferDataType)
 							{
@@ -2120,7 +2120,7 @@ namespace bgfx { namespace mtl
 						bool normalized;
 						bool asInt;
 						layout.decode(attr, num, type, normalized, asInt);
-						BX_CHECK(num <= 4, "num must be <= 4");
+						BX_ASSERT(num <= 4, "num must be <= 4");
 
 						if (UINT16_MAX != layout.m_attributes[attr])
 						{
@@ -2507,7 +2507,7 @@ namespace bgfx { namespace mtl
 
 	void ProgramMtl::create(const ShaderMtl* _vsh, const ShaderMtl* _fsh)
 	{
-		BX_CHECK(NULL != _vsh->m_function.m_obj, "Vertex shader doesn't exist.");
+		BX_ASSERT(NULL != _vsh->m_function.m_obj, "Vertex shader doesn't exist.");
 		m_vsh = _vsh;
 		m_fsh = _fsh;