diff --git a/minix/llvm/build.llvm b/minix/llvm/build.llvm
index c3b7eb5d9..913a3114a 100755
--- a/minix/llvm/build.llvm
+++ b/minix/llvm/build.llvm
@@ -140,9 +140,11 @@ echo
 
 cd ${MINIX_ROOT}
 
+OPTFLAGS=`echo ${OPTFLAGS} | sed -e 's/\\$/$$/g'`
 for m in ${MINIX_MODS}
 do 
 	echo "Instrumenting $m ..."
+
 	n=`get_module_name $m`
 	if [ "" == "$n" ]; then
                 echo "Error: Couldn't fetch the module name for $m"
@@ -153,12 +155,11 @@ do
 		continue
 	fi
 	clean_module $n $m
-	OPTFLAGS=`echo ${OPTFLAGS} | sed -e "s/\ /\\\ /g"`
-	OPTFLAGS_PLACEHOLDER="OPTFLAGS.$n=${OPTFLAGS}"
-	
-	(env "`echo ${OPTFLAGS_PLACEHOLDER}`" MKBITCODE=yes \
-	${TOOLDIR}/nbmake-${ARCH} -C $m all install && echo "INFO: $m successfully instrumented." ) || echo "ERROR: Failed instrumenting $m"
-	echo 
+
+	( ${TOOLDIR}/nbmake-${ARCH} -C $m all install MKBITCODE=yes OPTFLAGS.$n="${OPTFLAGS}" \
+	    && echo "INFO: $m successfully instrumented."
+	)
+	echo
 done
 
 cd ${MYPWD}