diff --git a/Source/Project64-video/Combine.cpp b/Source/Project64-video/Combine.cpp
index 6f3245a71..73a0f43fb 100644
--- a/Source/Project64-video/Combine.cpp
+++ b/Source/Project64-video/Combine.cpp
@@ -15512,6 +15512,8 @@ void Combine()
         = cmb.modfactor_0 = cmb.modfactor_1 = 0;
 
     cmb.ccolor = cmb.tex_ccolor = 0;
+    cmb.cmb_ext_use = 0;
+    cmb.tex_cmb_ext_use = 0;
 
     uint32_t cmb_mode_c = (rdp.cycle1 << 16) | (rdp.cycle2 & 0xFFFF);
     uint32_t cmb_mode_a = (rdp.cycle1 & 0x0FFF0000) | ((rdp.cycle2 >> 16) & 0x00000FFF);