diff --git a/src/test/tpkg/run-all-lcov.sh b/src/test/tpkg/run-all-lcov.sh
index 5e5bfffe..37fdb5bd 100755
--- a/src/test/tpkg/run-all-lcov.sh
+++ b/src/test/tpkg/run-all-lcov.sh
@@ -11,7 +11,7 @@ do
     # after the test is complete, we need to collect the coverage data
     INFO_FILE=`echo $TEST_PKG | sed 's/.tpkg$//'`.info
     geninfo $SRCDIR/.. -o $INFO_FILE
-    LCOV_MERGE="$LCOV_MERGE -a $INFO_FILE"
+    [ -s $INFO_FILE ] && LCOV_MERGE="$LCOV_MERGE -a $INFO_FILE"
 done
 lcov $LCOV_MERGE -o run-all.info
 genhtml run-all.info --output-directory coverage-html