diff --git a/app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserFragmentStore.kt b/app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserFragmentStore.kt
index 3074a4fab..5f5ba3a12 100644
--- a/app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserFragmentStore.kt
+++ b/app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserFragmentStore.kt
@@ -53,7 +53,7 @@ sealed class QuickActionSheetAction : BrowserFragmentAction() {
  * A top level reducer that receives the current [BrowserFragmentState] and an [Action] and then delegates to the proper child
  *
  */
-fun browserStateReducer(
+private fun browserStateReducer(
     state: BrowserFragmentState,
     action: BrowserFragmentAction
 ): BrowserFragmentState {
diff --git a/app/src/main/java/org/mozilla/fenix/exceptions/ExceptionsFragmentStore.kt b/app/src/main/java/org/mozilla/fenix/exceptions/ExceptionsFragmentStore.kt
index 6d4ae4960..720f5a97a 100644
--- a/app/src/main/java/org/mozilla/fenix/exceptions/ExceptionsFragmentStore.kt
+++ b/app/src/main/java/org/mozilla/fenix/exceptions/ExceptionsFragmentStore.kt
@@ -36,7 +36,7 @@ data class ExceptionsFragmentState(val items: List<ExceptionsItem>) : State
 /**
  * The ExceptionsState Reducer.
  */
-fun exceptionsStateReducer(state: ExceptionsFragmentState, action: ExceptionsFragmentAction): ExceptionsFragmentState {
+private fun exceptionsStateReducer(state: ExceptionsFragmentState, action: ExceptionsFragmentAction): ExceptionsFragmentState {
     return when (action) {
         is ExceptionsFragmentAction.Change -> state.copy(items = action.list)
     }
diff --git a/app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragmentStore.kt b/app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragmentStore.kt
index 74a583b4d..34674b061 100644
--- a/app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragmentStore.kt
+++ b/app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkFragmentStore.kt
@@ -45,7 +45,7 @@ sealed class BookmarkFragmentAction : Action {
  * @param action the action to perform
  * @return the new bookmarks state
  */
-fun bookmarkFragmentStateReducer(state: BookmarkFragmentState, action: BookmarkFragmentAction): BookmarkFragmentState {
+private fun bookmarkFragmentStateReducer(state: BookmarkFragmentState, action: BookmarkFragmentAction): BookmarkFragmentState {
     return when (action) {
         is BookmarkFragmentAction.Change -> {
             val items = state.mode.selectedItems.filter { it in action.tree }
diff --git a/app/src/main/java/org/mozilla/fenix/search/SearchFragmentStore.kt b/app/src/main/java/org/mozilla/fenix/search/SearchFragmentStore.kt
index 7bed7d7ec..540e106b9 100644
--- a/app/src/main/java/org/mozilla/fenix/search/SearchFragmentStore.kt
+++ b/app/src/main/java/org/mozilla/fenix/search/SearchFragmentStore.kt
@@ -63,7 +63,7 @@ sealed class SearchFragmentAction : Action {
 /**
  * The SearchState Reducer.
  */
-fun searchStateReducer(state: SearchFragmentState, action: SearchFragmentAction): SearchFragmentState {
+private fun searchStateReducer(state: SearchFragmentState, action: SearchFragmentAction): SearchFragmentState {
     return when (action) {
         is SearchFragmentAction.SearchShortcutEngineSelected ->
             state.copy(