diff --git a/script/make-pretty b/script/make-pretty
index 36c1afa3e..380725aa0 100755
--- a/script/make-pretty
+++ b/script/make-pretty
@@ -124,6 +124,7 @@ modernize-use-equals-default,\
 modernize-use-equals-delete,\
 modernize-use-nullptr,\
 readability-avoid-const-params-in-decls,\
+readability-else-after-return,\
 readability-inconsistent-declaration-parameter-name,\
 readability-make-member-function-const,\
 readability-redundant-member-init,\
diff --git a/src/core/thread/mle_router.cpp b/src/core/thread/mle_router.cpp
index 8dae0756b..a4aee28da 100644
--- a/src/core/thread/mle_router.cpp
+++ b/src/core/thread/mle_router.cpp
@@ -4230,10 +4230,8 @@ bool MleRouter::HasOneNeighborWithComparableConnectivity(const RouteTlv &aRoute,
                     routerCount++;
                     continue;
                 }
-                else
-                {
-                    ExitNow(rval = false);
-                }
+
+                ExitNow(rval = false);
             }
         }
 
diff --git a/tests/unit/test_platform.cpp b/tests/unit/test_platform.cpp
index bf1d014dd..80aa3704f 100644
--- a/tests/unit/test_platform.cpp
+++ b/tests/unit/test_platform.cpp
@@ -140,16 +140,16 @@ void otPlatAlarmMilliStartAt(otInstance *aInstance, uint32_t aT0, uint32_t aDt)
 
 uint32_t otPlatAlarmMilliGetNow(void)
 {
+    struct timeval tv;
+
     if (g_testPlatAlarmGetNow)
     {
         return g_testPlatAlarmGetNow();
     }
-    else
-    {
-        struct timeval tv;
-        gettimeofday(&tv, nullptr);
-        return (uint32_t)((tv.tv_sec * 1000) + (tv.tv_usec / 1000) + 123456);
-    }
+
+    gettimeofday(&tv, nullptr);
+
+    return (uint32_t)((tv.tv_sec * 1000) + (tv.tv_usec / 1000) + 123456);
 }
 
 void otPlatAlarmMicroStop(otInstance *aInstance)
@@ -179,16 +179,16 @@ void otPlatAlarmMicroStartAt(otInstance *aInstance, uint32_t aT0, uint32_t aDt)
 
 uint32_t otPlatAlarmMicroGetNow(void)
 {
+    struct timeval tv;
+
     if (g_testPlatAlarmGetNow)
     {
         return g_testPlatAlarmGetNow();
     }
-    else
-    {
-        struct timeval tv;
-        gettimeofday(&tv, nullptr);
-        return (uint32_t)((tv.tv_sec * 1000000) + tv.tv_usec + 123456);
-    }
+
+    gettimeofday(&tv, nullptr);
+
+    return (uint32_t)((tv.tv_sec * 1000000) + tv.tv_usec + 123456);
 }
 
 //
@@ -233,10 +233,8 @@ bool otPlatRadioIsEnabled(otInstance *aInstance)
     {
         return g_testPlatRadioIsEnabled(aInstance);
     }
-    else
-    {
-        return true;
-    }
+
+    return true;
 }
 
 otError otPlatRadioEnable(otInstance *aInstance)
@@ -245,10 +243,8 @@ otError otPlatRadioEnable(otInstance *aInstance)
     {
         return g_testPlatRadioEnable(aInstance);
     }
-    else
-    {
-        return OT_ERROR_NONE;
-    }
+
+    return OT_ERROR_NONE;
 }
 
 otError otPlatRadioDisable(otInstance *aInstance)
@@ -257,10 +253,8 @@ otError otPlatRadioDisable(otInstance *aInstance)
     {
         return g_testPlatRadioDisable(aInstance);
     }
-    else
-    {
-        return OT_ERROR_NONE;
-    }
+
+    return OT_ERROR_NONE;
 }
 
 otError otPlatRadioSleep(otInstance *)
@@ -274,10 +268,8 @@ otError otPlatRadioReceive(otInstance *aInstance, uint8_t aChannel)
     {
         return g_testPlatRadioReceive(aInstance, aChannel);
     }
-    else
-    {
-        return OT_ERROR_NONE;
-    }
+
+    return OT_ERROR_NONE;
 }
 
 otError otPlatRadioTransmit(otInstance *aInstance, otRadioFrame *aFrame)
@@ -288,10 +280,8 @@ otError otPlatRadioTransmit(otInstance *aInstance, otRadioFrame *aFrame)
     {
         return g_testPlatRadioTransmit(aInstance);
     }
-    else
-    {
-        return OT_ERROR_NONE;
-    }
+
+    return OT_ERROR_NONE;
 }
 
 otRadioFrame *otPlatRadioGetTransmitBuffer(otInstance *aInstance)
@@ -300,10 +290,8 @@ otRadioFrame *otPlatRadioGetTransmitBuffer(otInstance *aInstance)
     {
         return g_testPlatRadioGetTransmitBuffer(aInstance);
     }
-    else
-    {
-        return nullptr;
-    }
+
+    return nullptr;
 }
 
 int8_t otPlatRadioGetRssi(otInstance *)