diff --git a/app.go b/app.go
index 8d01f3f9..2a8a5754 100644
--- a/app.go
+++ b/app.go
@@ -106,6 +106,8 @@ type App struct {
 	tlsHandler *TLSHandler
 	// Mount fields
 	mountFields *mountFields
+	// state management
+	state *State
 	// Route stack divided by HTTP methods
 	stack [][]*Route
 	// Route stack divided by HTTP methods and route prefixes
@@ -129,8 +131,6 @@ type App struct {
 	handlersCount uint32
 	// contains the information if the route stack has been changed to build the optimized tree
 	routesRefreshed bool
-	// state management
-	state *State
 }
 
 // Config is a struct holding the server settings.
diff --git a/state.go b/state.go
index 73c3aeb7..90da98ee 100644
--- a/state.go
+++ b/state.go
@@ -1,6 +1,8 @@
 package fiber
 
-import "sync"
+import (
+	"sync"
+)
 
 // State is a key-value store for Fiber's app in order to be used as a global storage for the app's dependencies.
 // It's a thread-safe implementation of a map[string]any, using sync.Map.
@@ -48,7 +50,7 @@ func (s *State) GetInt(key string) (int, bool) {
 }
 
 // GetBool retrieves a bool value from the State.
-func (s *State) GetBool(key string) (bool, bool) {
+func (s *State) GetBool(key string) (value, ok bool) { //nolint:nonamedreturns // Better idea to use named returns here
 	dep, ok := s.Get(key)
 	if ok {
 		depBool, okCast := dep.(bool)
@@ -92,7 +94,12 @@ func (s *State) Clear() {
 func (s *State) Keys() []string {
 	keys := make([]string, 0)
 	s.dependencies.Range(func(key, _ any) bool {
-		keys = append(keys, key.(string))
+		keyStr, ok := key.(string)
+		if !ok {
+			return false
+		}
+
+		keys = append(keys, keyStr)
 		return true
 	})
 
diff --git a/state_test.go b/state_test.go
index d573f470..b09f01ac 100644
--- a/state_test.go
+++ b/state_test.go
@@ -92,18 +92,18 @@ func TestState_GetFloat64(t *testing.T) {
 	st.Set("pi", 3.14)
 	f, ok := st.GetFloat64("pi")
 	require.True(t, ok)
-	require.Equal(t, 3.14, f)
+	require.InDelta(t, 3.14, f, 0.0001)
 
 	// wrong type should return zero value
 	st.Set("int", 10)
 	f, ok = st.GetFloat64("int")
 	require.False(t, ok)
-	require.Equal(t, 0.0, f)
+	require.InDelta(t, 0.0, f, 0.0001)
 
 	// missing key should return zero value
 	f, ok = st.GetFloat64("missing")
 	require.False(t, ok)
-	require.Equal(t, 0.0, f)
+	require.InDelta(t, 0.0, f, 0.0001)
 }
 
 func TestState_MustGet(t *testing.T) {
@@ -170,7 +170,7 @@ func TestState_Len(t *testing.T) {
 	require.Equal(t, 1, st.Len())
 }
 
-type testCase[T any] struct {
+type testCase[T any] struct { //nolint:govet // It does not really matter for test
 	name     string
 	key      string
 	value    any
@@ -179,6 +179,8 @@ type testCase[T any] struct {
 }
 
 func runGenericTest[T any](t *testing.T, getter func(*State, string) (T, bool), tests []testCase[T]) {
+	t.Helper()
+
 	st := newState()
 	for _, tc := range tests {
 		st.Set(tc.key, tc.value)