diff --git a/TracyOpenGL.hpp b/TracyOpenGL.hpp
index 9555e2c1..10bd860c 100644
--- a/TracyOpenGL.hpp
+++ b/TracyOpenGL.hpp
@@ -17,6 +17,11 @@
 #define TracyGpuZoneS(x,y)
 #define TracyGpuZoneCS(x,y,z)
 
+namespace tracy
+{
+class GpuCtxScope {};
+}
+
 #else
 
 #include <atomic>
diff --git a/TracyVulkan.hpp b/TracyVulkan.hpp
index 2e11e873..85ea76a9 100644
--- a/TracyVulkan.hpp
+++ b/TracyVulkan.hpp
@@ -16,6 +16,11 @@
 #define TracyVkZoneS(c,x,y,z)
 #define TracyVkZoneCS(c,x,y,z,w)
 
+namespace tracy
+{
+class VkCtxScope {};
+}
+
 using TracyVkCtx = void*;
 
 #else