diff --git a/tool-testsuite/test/org/antlr/v4/test/tool/ErrorQueue.java b/runtime-testsuite/test/org/antlr/v4/test/runtime/java/ErrorQueue.java
similarity index 98%
rename from tool-testsuite/test/org/antlr/v4/test/tool/ErrorQueue.java
rename to runtime-testsuite/test/org/antlr/v4/test/runtime/java/ErrorQueue.java
index bd78830bf..3736c6bde 100644
--- a/tool-testsuite/test/org/antlr/v4/test/tool/ErrorQueue.java
+++ b/runtime-testsuite/test/org/antlr/v4/test/runtime/java/ErrorQueue.java
@@ -27,7 +27,7 @@
  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-package org.antlr.v4.test.tool;
+package org.antlr.v4.test.runtime.java;
 
 import org.antlr.v4.Tool;
 import org.antlr.v4.runtime.misc.Utils;