diff --git a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/JsonContentAssert.java b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/JsonContentAssert.java
index da1eac651a2d..7fe7e11cd5e2 100644
--- a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/JsonContentAssert.java
+++ b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/json/JsonContentAssert.java
@@ -97,7 +97,7 @@ public JsonContentAssert isEqualTo(Object expected) {
 		if (expected instanceof Resource) {
 			return isEqualToJson((Resource) expected);
 		}
-		failWithMessage("Unsupport type for JSON assert {}", expected.getClass());
+		failWithMessage("Unsupported type for JSON assert {}", expected.getClass());
 		return null;
 	}
 
@@ -434,7 +434,7 @@ public JsonContentAssert isNotEqualTo(Object expected) {
 		if (expected instanceof Resource) {
 			return isNotEqualToJson((Resource) expected);
 		}
-		failWithMessage("Unsupported type for JSON assert {]", expected.getClass());
+		failWithMessage("Unsupported type for JSON assert {}", expected.getClass());
 		return null;
 	}