diff --git a/public/app/features/explore/state/main.test.ts b/public/app/features/explore/state/main.test.ts
index 3a5d5839784..048847154f5 100644
--- a/public/app/features/explore/state/main.test.ts
+++ b/public/app/features/explore/state/main.test.ts
@@ -141,9 +141,10 @@ describe('Explore reducer', () => {
           .thenStateShouldEqual({
             left: rightItemMock,
             right: undefined,
+            syncedTimes: false,
           } as unknown as ExploreState);
       });
-      it('should reset right pane when it is closed ', () => {
+      it('should reset right pane when it is closed', () => {
         const leftItemMock = {
           containerWidth: 100,
         } as unknown as ExploreItemState;
@@ -164,6 +165,28 @@ describe('Explore reducer', () => {
           .thenStateShouldEqual({
             left: leftItemMock,
             right: undefined,
+            syncedTimes: false,
+          } as unknown as ExploreState);
+      });
+
+      it('should unsync time ranges', () => {
+        const itemMock = {
+          containerWidth: 100,
+        } as unknown as ExploreItemState;
+
+        const initialState = {
+          left: itemMock,
+          right: itemMock,
+          syncedTimes: true,
+        } as unknown as ExploreState;
+
+        reducerTester<ExploreState>()
+          .givenReducer(exploreReducer, initialState)
+          .whenActionIsDispatched(splitCloseAction({ itemId: ExploreId.right }))
+          .thenStateShouldEqual({
+            left: itemMock,
+            right: undefined,
+            syncedTimes: false,
           } as unknown as ExploreState);
       });
     });
diff --git a/public/app/features/explore/state/main.ts b/public/app/features/explore/state/main.ts
index 3989cdbf359..5bed160cff9 100644
--- a/public/app/features/explore/state/main.ts
+++ b/public/app/features/explore/state/main.ts
@@ -179,6 +179,7 @@ export const exploreReducer = (state = initialExploreState, action: AnyAction):
     return {
       ...state,
       ...targetSplit,
+      syncedTimes: false,
     };
   }