diff --git a/bin/inspect_diff.bat b/bin/inspect_diff.bat
index adec59bbd972..29ff80c9664b 100644
--- a/bin/inspect_diff.bat
+++ b/bin/inspect_diff.bat
@@ -42,6 +42,7 @@ SET CLASS_PATH=%IDEA_HOME%\lib\bootstrap.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\idea.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\resources_en.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\openapi.jar
+SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\util.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\jdom.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\log4j.jar
 SET CLASS_PATH=%CLASS_PATH%;%IDEA_HOME%\lib\extensions.jar
diff --git a/bin/inspect_diff.sh b/bin/inspect_diff.sh
index 0ef5b376cc43..3e93408897cb 100644
--- a/bin/inspect_diff.sh
+++ b/bin/inspect_diff.sh
@@ -45,6 +45,7 @@ JVM_ARGS="$JVM_ARGS $REQUIRED_JVM_ARGS"
 
 CLASSPATH=../lib/bootstrap.jar
 CLASSPATH=$CLASSPATH:../lib/openapi.jar
+CLASSPATH=$CLASSPATH:../lib/util.jar
 CLASSPATH=$CLASSPATH:../lib/idea.jar
 CLASSPATH=$CLASSPATH:../lib/resources_en.jar
 CLASSPATH=$CLASSPATH:../lib/jdom.jar