diff --git a/jdbc/src/main/java/org/springframework/transaction/support/TransactionSynchronizationManager.java b/jdbc/src/main/java/org/springframework/transaction/support/TransactionSynchronizationManager.java
index 328fc49492..835a30a6c6 100644
--- a/jdbc/src/main/java/org/springframework/transaction/support/TransactionSynchronizationManager.java
+++ b/jdbc/src/main/java/org/springframework/transaction/support/TransactionSynchronizationManager.java
@@ -14,7 +14,7 @@ private TransactionSynchronizationManager() {}
     public static Connection getResource(DataSource key) {
         final Map<DataSource, Connection> connectionHolder = resources.get();
 
-        if (connectionHolder == null) {
+        if (connectionHolder == null || !connectionHolder.containsKey(key)) {
             return null;
         }