diff --git a/bin/jtsop.sh b/bin/jtsop.sh
index 46efda1898..945c437ecb 100755
--- a/bin/jtsop.sh
+++ b/bin/jtsop.sh
@@ -7,4 +7,4 @@ fi
 #---------------------------#
 # run the program           #
 #---------------------------#
-java -cp ${JTS_LIB_DIR}/JTSTestBuilder.jar org.locationtech.jtstest.cmd.JTSOpCmd $@
+java -cp ${JTS_LIB_DIR}/JTSTestBuilder.jar org.locationtech.jtstest.cmd.JTSOpCmd "$@"
diff --git a/bin/testbuilder.sh b/bin/testbuilder.sh
index 1b569175e1..642f635267 100755
--- a/bin/testbuilder.sh
+++ b/bin/testbuilder.sh
@@ -15,4 +15,4 @@ fi
 #---------------------------#
 # run the program           #
 #---------------------------#
-java -jar ${JAVA_OPTS} ${JAVA_LOOKANDFEEL} -jar ${JTS_LIB_DIR}/JTSTestBuilder.jar ${APP_OPTS}
+java -jar ${JAVA_OPTS} ${JAVA_LOOKANDFEEL} -jar ${JTS_LIB_DIR}/JTSTestBuilder.jar ${APP_OPTS} "$@"
diff --git a/bin/testrunner.sh b/bin/testrunner.sh
index 8d1b488c17..d334740128 100755
--- a/bin/testrunner.sh
+++ b/bin/testrunner.sh
@@ -7,4 +7,4 @@ fi
 #---------------------------#
 # run the program           #
 #---------------------------#
-java -jar ${JTS_LIB_DIR}/JTSTestRunner.jar $@
+java -jar ${JTS_LIB_DIR}/JTSTestRunner.jar "$@"