diff --git a/.bin/obsdmake b/.bin/obsdmake
index 77d683b..1bfb3ca 100755
--- a/.bin/obsdmake
+++ b/.bin/obsdmake
@@ -9,7 +9,7 @@ abort() { echo "Abort with >$0 $ARGS< on $(date)" >> /tmp/obsdmake.log; }
 JOBS="${JOBS:=$(sysctl -n hw.ncpuonline)}"
 
 export CCACHE_DIR="/var/ccache"
-export CCACHE_SLOPPINESS="locale,time_macros,random_seed,file_stat_matches"
+export CCACHE_SLOPPINESS="locale,time_macros,random_seed,file_stat_matches,pch_defines"
 export CCACHE_MAXSIZE=60G
 export CCACHE_NOHASHDIR=