diff --git a/client/renderers/EGL/desktop.c b/client/renderers/EGL/desktop.c
index f60075c0..bfa20aa3 100644
--- a/client/renderers/EGL/desktop.c
+++ b/client/renderers/EGL/desktop.c
@@ -515,7 +515,7 @@ bool egl_desktopRender(EGL_Desktop * desktop, unsigned int outputWidth,
       &desktop->dmaShader : &desktop->shader;
 
   const float mapHDRGain =
-    desktop->maxCLL / desktop->peakLuminance;
+    (float)desktop->maxCLL / desktop->peakLuminance;
 
   EGL_Uniform uniforms[] =
   {