diff --git a/platform.txt b/platform.txt
index 80c4a11d26..120cfb0042 100644
--- a/platform.txt
+++ b/platform.txt
@@ -118,7 +118,7 @@ recipe.hooks.sketch.prebuild.pattern="{runtime.tools.python3.path}/python3" -I "
 recipe.hooks.prebuild.1.pattern="{runtime.tools.python3.path}/python3" -I "{runtime.tools.makecorever}" --build_path "{build.path}" --platform_path "{runtime.platform.path}" --version "{version}"
 
 # Handle processing sketch global options
-recipe.hooks.prebuild.2.pattern="{runtime.tools.python3.path}/python3" "{runtime.tools.mkbuildoptglobals}" "{runtime.ide.path}" {runtime.ide.version} "{build.path}" "{build.opt.fqfn}" "{globals.h.source.fqfn}" "{commonhfile.fqfn}" {mkbuildoptglobals.extra_flags}
+recipe.hooks.prebuild.2.pattern="{runtime.tools.python3.path}/python3" -I "{runtime.tools.mkbuildoptglobals}" "{runtime.ide.path}" {runtime.ide.version} "{build.path}" "{build.opt.fqfn}" "{globals.h.source.fqfn}" "{commonhfile.fqfn}" {mkbuildoptglobals.extra_flags}
 
 
 ## Build the app.ld linker file
diff --git a/tools/mkbuildoptglobals.py b/tools/mkbuildoptglobals.py
index 23a9e940e1..5c98ce3f7a 100644
--- a/tools/mkbuildoptglobals.py
+++ b/tools/mkbuildoptglobals.py
@@ -81,7 +81,7 @@
 build.opt.fqfn={build.path}/core/build.opt
 mkbuildoptglobals.extra_flags=
 
-recipe.hooks.prebuild.2.pattern="{runtime.tools.python3.path}/python3" "{runtime.tools.mkbuildoptglobals}" "{runtime.ide.path}" {runtime.ide.version} "{build.path}" "{build.opt.fqfn}" "{globals.h.source.fqfn}" "{commonhfile.fqfn}" {mkbuildoptglobals.extra_flags}
+recipe.hooks.prebuild.2.pattern="{runtime.tools.python3.path}/python3" -I "{runtime.tools.mkbuildoptglobals}" "{runtime.ide.path}" {runtime.ide.version} "{build.path}" "{build.opt.fqfn}" "{globals.h.source.fqfn}" "{commonhfile.fqfn}" {mkbuildoptglobals.extra_flags}
 
 compiler.cpreprocessor.flags=-D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ -D_GNU_SOURCE -DESP8266 @{build.opt.path} "-I{compiler.sdk.path}/include" "-I{compiler.sdk.path}/{build.lwip_include}" "-I{compiler.libc.path}/include" "-I{build.path}/core"
 """