diff --git a/easymock.spec b/easymock.spec
index 2195bc1..3abcf0a 100644
--- a/easymock.spec
+++ b/easymock.spec
@@ -91,6 +91,10 @@ rm core/src/test/java/org/easymock/tests2/ClassExtensionHelperTest.java
 # ssh not needed during our builds
 %pom_xpath_remove pom:extensions
 
+# Force Surefire to run tests with JUnit, not with TestNG
+%pom_xpath_inject "pom:plugin[pom:artifactId='maven-surefire-plugin']" \
+    "<configuration><testNGArtifactName>none:none</testNGArtifactName></configuration>" core
+
 %build
 %mvn_build