diff --git a/substratevm/src/com.oracle.svm.driver/src/com/oracle/svm/driver/MemoryUtil.java b/substratevm/src/com.oracle.svm.driver/src/com/oracle/svm/driver/MemoryUtil.java
index 990583c13ab2..7cae7ce04a99 100644
--- a/substratevm/src/com.oracle.svm.driver/src/com/oracle/svm/driver/MemoryUtil.java
+++ b/substratevm/src/com.oracle.svm.driver/src/com/oracle/svm/driver/MemoryUtil.java
@@ -63,7 +63,7 @@ public static List<String> determineMemoryFlags(NativeImage.HostFlags hostFlags)
         if (hostFlags.hasMaxRAMPercentage()) {
             flags.add("-XX:MaxRAMPercentage=" + determineReasonableMaxRAMPercentage());
         } else if (hostFlags.hasMaximumHeapSizePercent()) {
-            flags.add("-XX:MaximumHeapSizePercent=" + determineReasonableMaxRAMPercentage());
+            flags.add("-XX:MaximumHeapSizePercent=" + (int) determineReasonableMaxRAMPercentage());
         }
         if (hostFlags.hasGCTimeRatio()) {
             /*