diff --git a/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCall.java b/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCall.java
index b6073895c3..770606f365 100644
--- a/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCall.java
+++ b/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCall.java
@@ -165,7 +165,7 @@ public class SimpleJdbcCall extends AbstractJdbcCall implements SimpleJdbcCallOp
 		return doExecute(args);
 	}
 
-	public Map<String, Object> execute(Map<String, Object> args) {
+	public Map<String, Object> execute(Map<String, ?> args) {
 		return doExecute(args);
 	}
 
diff --git a/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCallOperations.java b/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCallOperations.java
index bf9c6b4ff3..5bb794a830 100644
--- a/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCallOperations.java
+++ b/org.springframework.jdbc/src/main/java/org/springframework/jdbc/core/simple/SimpleJdbcCallOperations.java
@@ -164,7 +164,7 @@ public interface SimpleJdbcCallOperations {
 	 * @param args Map containing the parameter values to be used in the call.
 	 * @return map of output params.
 	 */
-	Map<String, Object> execute(Map<String, Object> args);
+	Map<String, Object> execute(Map<String, ?> args);
 
 	/**
 	 * Execute the stored procedure and return a map of output params, keyed by name as in parameter declarations..