diff --git a/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/DeleteRecentSearchTest.kt b/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/DeleteRecentSearchTest.kt
index 12ad3f3eb..a5ac793b8 100644
--- a/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/DeleteRecentSearchTest.kt
+++ b/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/DeleteRecentSearchTest.kt
@@ -22,6 +22,7 @@ import androidx.appcompat.app.AppCompatActivity
 import io.mockk.mockk
 import io.mockk.verify
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
 import org.junit.jupiter.api.Test
 import org.kiwix.kiwixmobile.core.dao.RecentSearchRoomDao
 import org.kiwix.kiwixmobile.core.search.adapter.SearchListItem
@@ -34,7 +35,7 @@ internal class DeleteRecentSearchTest {
     val searchListItem: SearchListItem = RecentSearchListItem("")
     val recentSearchDao: RecentSearchRoomDao = mockk()
     val activity: AppCompatActivity = mockk()
-    val viewModelScope: CoroutineScope = mockk()
+    val viewModelScope = CoroutineScope(Dispatchers.IO)
     DeleteRecentSearch(
       searchListItem = searchListItem,
       recentSearchRoomDao = recentSearchDao,
diff --git a/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/SaveSearchToRecentsTest.kt b/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/SaveSearchToRecentsTest.kt
index 928f9ca43..7555563de 100644
--- a/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/SaveSearchToRecentsTest.kt
+++ b/core/src/test/java/org/kiwix/kiwixmobile/core/search/viewmodel/effects/SaveSearchToRecentsTest.kt
@@ -23,6 +23,7 @@ import io.mockk.Called
 import io.mockk.mockk
 import io.mockk.verify
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
 import org.junit.jupiter.api.Test
 import org.kiwix.kiwixmobile.core.dao.RecentSearchRoomDao
 import org.kiwix.kiwixmobile.core.search.adapter.SearchListItem.RecentSearchListItem
@@ -33,7 +34,7 @@ internal class SaveSearchToRecentsTest {
   private val searchListItem = RecentSearchListItem("")
 
   private val activity: AppCompatActivity = mockk()
-  private val viewModelScope: CoroutineScope = mockk()
+  private val viewModelScope = CoroutineScope(Dispatchers.IO)
 
   @Test
   fun `invoke with null Id does nothing`() {