diff --git a/mps/code/w3i3mv.nmk b/mps/code/w3i3mv.nmk
index 11acc7e74c6..d92decb1f97 100644
--- a/mps/code/w3i3mv.nmk
+++ b/mps/code/w3i3mv.nmk
@@ -9,7 +9,7 @@ PFM = w3i3mv
 # (if not suppressed) generate a dependency on the C library, __chkesp,
 # which causes the linker step to fail when building the DLL, mpsdy.dll.
 PFMDEFS = /DCONFIG_PF_STRING="w3i3mv" /DCONFIG_PF_W3I3MV \
-      /DWIN32 /D_WINDOWS /Gs /I$(RAINBOWPATH)
+      /DWIN32 /D_WINDOWS /Gs
 
 MPM = <ring> <mpm> <bt> <protocol> <boot> \
       <arenavm> <arenacl> <locus> <arena> <global> <tract> <reserv> \
diff --git a/mps/code/w3i6mv.nmk b/mps/code/w3i6mv.nmk
index 0b257d25f07..943f9c559d0 100644
--- a/mps/code/w3i6mv.nmk
+++ b/mps/code/w3i6mv.nmk
@@ -9,7 +9,7 @@ PFM = w3i6mv
 # (if not suppressed) generate a dependency on the C library, __chkesp,
 # which causes the linker step to fail when building the DLL, mpsdy.dll.
 PFMDEFS = /DCONFIG_PF_STRING="w3i6mv" /DCONFIG_PF_W3I6MV \
-      /DWIN32 /D_WINDOWS /Gs /I$(RAINBOWPATH)
+      /DWIN32 /D_WINDOWS /Gs
 MASM = ml64
 
 MPM = <ring> <mpm> <bt> <protocol> <boot> \