diff --git a/src/main/groovy/com/lesfurets/jenkins/unit/PipelineTestHelper.groovy b/src/main/groovy/com/lesfurets/jenkins/unit/PipelineTestHelper.groovy
index a5aefa3f..98b998e3 100644
--- a/src/main/groovy/com/lesfurets/jenkins/unit/PipelineTestHelper.groovy
+++ b/src/main/groovy/com/lesfurets/jenkins/unit/PipelineTestHelper.groovy
@@ -683,11 +683,12 @@ class PipelineTestHelper {
             exitValue = output.exitValue
         }
 
-        if (!returnStdout) {
+        // Jenkins also prints the output from sh when returnStdout is true if the script fails
+        if (!returnStdout || exitValue != 0) {
             println stdout
         }
 
-        if (returnStdout) {
+        if (returnStdout && exitValue == 0) {
             return stdout
         }
         if (returnStatus) {
diff --git a/src/test/groovy/com/lesfurets/jenkins/unit/PipelineTestHelperTest.groovy b/src/test/groovy/com/lesfurets/jenkins/unit/PipelineTestHelperTest.groovy
index 45a41486..a26e399b 100644
--- a/src/test/groovy/com/lesfurets/jenkins/unit/PipelineTestHelperTest.groovy
+++ b/src/test/groovy/com/lesfurets/jenkins/unit/PipelineTestHelperTest.groovy
@@ -123,6 +123,18 @@ class PipelineTestHelperTest {
         Assertions.assertThat(output).isEqualTo('/foo/bar')
     }
 
+    @Test(expected = Exception)
+    void runShWithStdoutFailure() {
+        // given:
+        def helper = new PipelineTestHelper()
+        helper.addShMock('pwd', '/foo/bar', 1)
+
+        // when:
+        helper.runSh(returnStdout: true, script: 'pwd')
+
+        // then: Exception raised
+    }
+
     @Test
     void runShWithReturnCode() {
         // given: