diff --git a/block/manager.go b/block/manager.go
index 97c684a4d25..c6bb733d3c5 100644
--- a/block/manager.go
+++ b/block/manager.go
@@ -29,7 +29,7 @@ import (
 )
 
 // defaultDABlockTime is used only if DABlockTime is not configured for manager
-const defaultDABlockTime = 30 * time.Second
+const defaultDABlockTime = 15 * time.Second
 
 // defaultBlockTime is used only if BlockTime is not configured for manager
 const defaultBlockTime = 1 * time.Second
diff --git a/config/defaults.go b/config/defaults.go
index eeb0a9dbdcf..52ffd65dce1 100644
--- a/config/defaults.go
+++ b/config/defaults.go
@@ -22,7 +22,7 @@ var DefaultNodeConfig = NodeConfig{
 	LazyAggregator: false,
 	BlockManagerConfig: BlockManagerConfig{
 		BlockTime:   1 * time.Second,
-		DABlockTime: 30 * time.Second,
+		DABlockTime: 15 * time.Second,
 		NamespaceID: types.NamespaceID{},
 	},
 	DALayer:  "mock",
diff --git a/da/test/da_test.go b/da/test/da_test.go
index 269e4696500..f3bab33cae8 100644
--- a/da/test/da_test.go
+++ b/da/test/da_test.go
@@ -33,7 +33,7 @@ var (
 	testNamespaceID = types.NamespaceID{0, 1, 2, 3, 4, 5, 6, 7}
 
 	testConfig = celestia.Config{
-		Timeout:  30 * time.Second,
+		Timeout:  15 * time.Second,
 		GasLimit: 3000000,
 	}
 )