diff --git a/spring-context/src/main/java/org/springframework/context/support/PropertySourcesPlaceholderConfigurer.java b/spring-context/src/main/java/org/springframework/context/support/PropertySourcesPlaceholderConfigurer.java
index 2a7e348a27..444d42f8bd 100644
--- a/spring-context/src/main/java/org/springframework/context/support/PropertySourcesPlaceholderConfigurer.java
+++ b/spring-context/src/main/java/org/springframework/context/support/PropertySourcesPlaceholderConfigurer.java
@@ -230,6 +230,16 @@ public class PropertySourcesPlaceholderConfigurer extends PlaceholderConfigurerS
 		}
 
 
+		@Override
+		public boolean containsProperty(String name) {
+			for (PropertySource<?> propertySource : super.source.getPropertySources()) {
+				if (propertySource.containsProperty(name)) {
+					return true;
+				}
+			}
+			return false;
+		}
+
 		@Override
 		public @Nullable Object getProperty(String name) {
 			for (PropertySource<?> propertySource : super.source.getPropertySources()) {
@@ -241,16 +251,6 @@ public class PropertySourcesPlaceholderConfigurer extends PlaceholderConfigurerS
 			return null;
 		}
 
-		@Override
-		public boolean containsProperty(String name) {
-			for (PropertySource<?> propertySource : super.source.getPropertySources()) {
-				if (propertySource.containsProperty(name)) {
-					return true;
-				}
-			}
-			return false;
-		}
-
 		@Override
 		public String toString() {
 			return "ConfigurableEnvironmentPropertySource {propertySources=" + super.source.getPropertySources() + "}";
@@ -270,6 +270,11 @@ public class PropertySourcesPlaceholderConfigurer extends PlaceholderConfigurerS
 		}
 
 
+		@Override
+		public boolean containsProperty(String name) {
+			return super.source.containsProperty(name);
+		}
+
 		@Override
 		public @Nullable Object getProperty(String name) {
 			return super.source.getProperty(name);