diff --git a/src/services/BlockService/TransitionProcessor.tsx b/src/services/BlockService/TransitionProcessor.tsx
index 09c0099e..8d9dedeb 100644
--- a/src/services/BlockService/TransitionProcessor.tsx
+++ b/src/services/BlockService/TransitionProcessor.tsx
@@ -33,6 +33,11 @@ export const processTransition = async (flow: Flow, path: keyof Flow, params: Pa
 		transitionDetails = transitionAttr;
 	}
 
+	// if number provided, transform to object with default values
+	if (typeof transitionDetails === "number") {
+		transitionDetails = {duration: transitionDetails};
+	}
+
 	// cannot transition if details are not present
 	if (!transitionDetails || transitionDetails instanceof Promise) {
 		return;
@@ -44,7 +49,7 @@ export const processTransition = async (flow: Flow, path: keyof Flow, params: Pa
 	}
 
 	// defaults interruptable to false if not found
-	if (!transitionDetails.interruptable) {
+	if (transitionDetails.interruptable == null) {
 		transitionDetails.interruptable = false;
 	}
 	
diff --git a/src/types/Block.ts b/src/types/Block.ts
index 46225163..614a2a3f 100644
--- a/src/types/Block.ts
+++ b/src/types/Block.ts
@@ -21,9 +21,9 @@ export type Block = {
 	((params: Params) => Promise<JSX.Element | void>);
 	chatDisabled?: boolean | ((params: Params) => boolean) | ((params: Params) => Promise<boolean>);
 	isSensitive?: boolean | ((params: Params) => boolean) | ((params: Params) => Promise<boolean>);
-	transition?: {duration: number, interruptable?: boolean} | void | 
-		((params: Params) => {duration: number, interruptable?: boolean} | void) |
-		((params: Params) => Promise<{duration: number, interruptable?: boolean} | void>);
+	transition?: number | {duration: number, interruptable?: boolean} | void | 
+		((params: Params) =>  number | {duration: number, interruptable?: boolean} | void) |
+		((params: Params) => Promise<number | {duration: number, interruptable?: boolean} | void>);
 
 	// post-processing attributes (runs after user input)
 	function?: ((params: Params) => void) | ((params: Params) => Promise<void>);