diff --git a/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/io/InspectedContent.java b/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/io/InspectedContent.java
index 0916b6064f5..96cc8a5820f 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/io/InspectedContent.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/io/InspectedContent.java
@@ -139,7 +139,7 @@ public class InspectedContent implements Content {
 
 		private File tempFile;
 
-		private final byte[] singleByteBuffer = new byte[0];
+		private final byte[] singleByteBuffer = new byte[1];
 
 		private InspectingOutputStream(Inspector[] inspectors) {
 			this.inspectors = inspectors;
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/io/InspectedContentTests.java b/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/io/InspectedContentTests.java
index 097933f0817..35d5b933198 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/io/InspectedContentTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/io/InspectedContentTests.java
@@ -90,6 +90,13 @@ class InspectedContentTests {
 					0xa3, 0xbf, 0x4f, 0x1b, 0x2b, 0x0b, 0x82, 0x2c, 0xd1, 0x5d, 0x6c, 0x15, 0xb0, 0xf0, 0x0a, 0x08);
 	}
 
+	@Test
+	void ofWritingSingleByteShouldWork() throws Exception {
+		InspectedContent content = InspectedContent.of((outputStream) -> outputStream.write('A'));
+		assertThat(content.size()).isEqualTo(1);
+		assertThat(readBytes(content)).containsExactly('A');
+	}
+
 	private byte[] readBytes(InspectedContent content) throws IOException {
 		ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
 		content.writeTo(outputStream);