diff --git a/tests/Makefile b/tests/Makefile
index 81b19aae0..b533fb07d 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -12,7 +12,9 @@ all: clean
 run-basic-tests: all
 	ant test
 	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml 2>/dev/null > linphone-junit-report.xml
+	if [ ! -s linphone-junit-report.xml ]; then exit 1; fi
 
 run-all-tests: all
 	adb shell am instrument -w -e size large org.linphone.test/com.zutubi.android.junitreport.JUnitReportTestRunner
 	adb shell run-as org.linphone cat /data/data/org.linphone/files/junit-report.xml 2>/dev/null > linphone-junit-report.xml
+	if [ ! -s linphone-junit-report.xml ]; then exit 1; fi