diff --git a/src/bgfx_p.h b/src/bgfx_p.h
index c2c8d4a95..a1993f749 100644
--- a/src/bgfx_p.h
+++ b/src/bgfx_p.h
@@ -3165,6 +3165,8 @@ namespace bgfx
 
 		BGFX_API_FUNC(void reset(uint32_t _width, uint32_t _height, uint32_t _flags, TextureFormat::Enum _format) )
 		{
+			BGFX_MUTEX_SCOPE(m_resourceApiLock);
+
 			const TextureFormat::Enum format = TextureFormat::Count != _format ? _format : m_init.resolution.format;
 
 			if (!g_platformDataChangedSinceReset