diff --git a/spring-boot-project/spring-boot-tools/spring-boot-loader-classic/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java b/spring-boot-project/spring-boot-tools/spring-boot-loader-classic/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java
index b37a99183a..27c30a0a7a 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-loader-classic/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-loader-classic/src/test/java/org/springframework/boot/loader/jar/JarFileTests.java
@@ -582,7 +582,7 @@ class JarFileTests {
 
 	@Test
 	void zip64JarThatExceedsZipSizeLimitCanBeRead() throws Exception {
-		Assumptions.assumeTrue(this.tempDir.getFreeSpace() > 6 * 1024 * 1024 * 1024, "Insufficient disk space");
+		Assumptions.assumeTrue(this.tempDir.getFreeSpace() > 6L * 1024 * 1024 * 1024, "Insufficient disk space");
 		File zip64Jar = new File(this.tempDir, "zip64.jar");
 		File entry = new File(this.tempDir, "entry.dat");
 		CRC32 crc32 = new CRC32();
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/zip/ZipContentTests.java b/spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/zip/ZipContentTests.java
index fe0e8bd542..5ae7fe82f2 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/zip/ZipContentTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/zip/ZipContentTests.java
@@ -283,7 +283,7 @@ class ZipContentTests {
 
 	@Test
 	void openWhenZip64ThatExceedsZipSizeLimitOpensZip() throws Exception {
-		Assumptions.assumeTrue(this.tempDir.getFreeSpace() > 6 * 1024 * 1024 * 1024, "Insufficient disk space");
+		Assumptions.assumeTrue(this.tempDir.getFreeSpace() > 6L * 1024 * 1024 * 1024, "Insufficient disk space");
 		File zip64File = new File(this.tempDir, "zip64.zip");
 		File entryFile = new File(this.tempDir, "entry.dat");
 		CRC32 crc32 = new CRC32();