--- a/configure.in
+++ b/configure.in
@@ -1742,18 +1742,18 @@ case "$target" in
       MIPSPRO_CXX=1
     fi
     ;;
 
 *-*linux*)
     if test "$GNU_CC"; then
         GCC_VERSION=`$CC -v 2>&1 | awk '/version/ { print $3 }'`
         case $GCC_VERSION in
-        4.1.*)
-            # -Os is broken on gcc 4.1.x, we need to tweak it to get good results.
+        4.1.*|4.2.*)
+            # -Os is broken on gcc 4.1.x and 4.2.x, we need to tweak it to get good results.
             MOZ_OPTIMIZE_SIZE_TWEAK="-finline-limit=50"
         esac
     fi
 
     TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
     MOZ_OPTIMIZE_FLAGS="-Os -freorder-blocks -fno-reorder-functions $MOZ_OPTIMIZE_SIZE_TWEAK"
     MOZ_DEBUG_FLAGS="-g -fno-inline"  # most people on linux use gcc/gdb,
                                       # and that combo is not yet good at