diff --git a/codan/org.eclipse.cdt.codan.core.test/pom.xml b/codan/org.eclipse.cdt.codan.core.test/pom.xml
index ee202abfb79..1f00466e914 100644
--- a/codan/org.eclipse.cdt.codan.core.test/pom.xml
+++ b/codan/org.eclipse.cdt.codan.core.test/pom.xml
@@ -24,7 +24,7 @@
 				<configuration>
 					<!-- Need UI harness for quick fix tests -->
 					<useUIHarness>true</useUIHarness>
-					<argLine>-Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
+					<argLine>-ea -Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
 					<includes>
 						<include>**/AutomatedIntegrationSuite.*</include>
 					</includes>
diff --git a/core/org.eclipse.cdt.core.tests/pom.xml b/core/org.eclipse.cdt.core.tests/pom.xml
index 9c6c3c90e40..7f57c786ad6 100644
--- a/core/org.eclipse.cdt.core.tests/pom.xml
+++ b/core/org.eclipse.cdt.core.tests/pom.xml
@@ -32,7 +32,7 @@
 				<version>${tycho-version}</version>
 				<configuration>
 					<useUIHarness>false</useUIHarness>
-					<argLine>-Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
+					<argLine>-ea -Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
 					<includes>
 						<include>**/AutomatedIntegrationSuite.*</include>
 					</includes>
diff --git a/core/org.eclipse.cdt.ui.tests/pom.xml b/core/org.eclipse.cdt.ui.tests/pom.xml
index 626db878fe4..e6222b56a22 100644
--- a/core/org.eclipse.cdt.ui.tests/pom.xml
+++ b/core/org.eclipse.cdt.ui.tests/pom.xml
@@ -32,7 +32,7 @@
 				<version>${tycho-version}</version>
 				<configuration>
 					<useUIHarness>true</useUIHarness>
-					<argLine>-Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
+					<argLine>-ea -Xms256m -Xmx512m -XX:MaxPermSize=256M</argLine>
 					<includes>
 						<include>**/AutomatedSuite.*</include>
 					</includes>