diff --git a/tests/scripts/basic-build-test.sh b/tests/scripts/basic-build-test.sh
index 06c2eb9..ffca6f9 100755
--- a/tests/scripts/basic-build-test.sh
+++ b/tests/scripts/basic-build-test.sh
@@ -36,8 +36,8 @@
 
 
 # Step 1 - Make and instrumented build for code coverage
-CFLAGS=' --coverage -g3 -O0 '
-make
+export CFLAGS=' --coverage -g3 -O0 '
+make clean; make
 
 
 # Step 2 - Execute the tests