diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/client/BlockingStubFactory.java b/spring-grpc-core/src/main/java/org/springframework/grpc/client/BlockingStubFactory.java
index 684cc243..fc83ffce 100644
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/client/BlockingStubFactory.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/client/BlockingStubFactory.java
@@ -20,8 +20,10 @@
 public class BlockingStubFactory extends AbstractStubFactory<AbstractBlockingStub<?>> {
 
 	public static boolean supports(Class<?> type) {
-		return AbstractStubFactory.supports(AbstractBlockingStub.class, type)
-				&& !type.getSimpleName().contains("BlockingV2");
+		return (AbstractStubFactory.supports(AbstractBlockingStub.class, type)
+				&& !type.getSimpleName().contains("BlockingV2"))
+				// compatible for old grpc version
+				|| type.getSimpleName().endsWith("BlockingStub");
 	}
 
 	@Override