diff --git a/lib/spack/env/cc b/lib/spack/env/cc
index 4217159a25c..68cd8514f44 100755
--- a/lib/spack/env/cc
+++ b/lib/spack/env/cc
@@ -241,7 +241,7 @@ fi
 if [[ $SPACK_DEBUG = TRUE ]]; then
     input_log="$SPACK_DEBUG_LOG_DIR/spack-cc-$SPACK_SHORT_SPEC.in.log"
     output_log="$SPACK_DEBUG_LOG_DIR/spack-cc-$SPACK_SHORT_SPEC.out.log"
-    echo "$input_command" >> $input_log
+    echo "$command $input_command" >> $input_log
     echo "$mode       ${full_command[@]}" >> $output_log
 fi