diff --git a/core/grub/build b/core/grub/build
index 01d9b46c..46b057c1 100755
--- a/core/grub/build
+++ b/core/grub/build
@@ -2,7 +2,7 @@
 
 # Strip '-march' from 'CFLAGS' as per advice from upstream.
 # Fixes build fails on specific hardware.
-CFLAGS=$(printf %s "$CFLAGS" | sed 's/-march=[^ ]* //g')
+CFLAGS=$(printf %s "$CFLAGS" | sed 's/-march=[^ ]*//g')
 export CFLAGS
 
 # Grub is built in a function so the script argument