diff --git a/frameworks/Kieker/scripts/benchmark.sh b/frameworks/Kieker/scripts/benchmark.sh
index f24bb1018c349e12978c610d396832b27bc066c6..cdf996faaf95a9e2af1199609f8526bd8761db5c 100755
--- a/frameworks/Kieker/scripts/benchmark.sh
+++ b/frameworks/Kieker/scripts/benchmark.sh
@@ -64,8 +64,7 @@ RAWFN="${RESULTS_DIR}/raw"
 
 # general server arguments
 JAVA_ARGS="-server"
-JAVA_ARGS="${JAVA_ARGS} -d64"
-JAVA_ARGS="${JAVA_ARGS} -Xms1G -Xmx4G"
+JAVA_ARGS="${JAVA_ARGS} -Xms1G -Xmx2G"
 
 JAVA_OPTS="${FIXED_PARAMETERS}"