diff --git a/nimbus/utils/difficulty.nim b/nimbus/utils/difficulty.nim
index 198c369f6..11b58db9a 100644
--- a/nimbus/utils/difficulty.nim
+++ b/nimbus/utils/difficulty.nim
@@ -141,13 +141,13 @@ template calcDifficultyByzantium*(timeStamp: EthTime, parent: BlockHeader): Diff
 template calcDifficultyConstantinople*(timeStamp: EthTime, parent: BlockHeader): DifficultyInt =
   makeDifficultyCalculator(5_000_000, timeStamp, parent)
 
-template calcDifficultyGlacierMuir*(timeStamp: EthTime, parent: BlockHeader): DifficultyInt =
+template calcDifficultyMuirGlacier*(timeStamp: EthTime, parent: BlockHeader): DifficultyInt =
   makeDifficultyCalculator(9_000_000, timeStamp, parent)
 
 func calcDifficulty*(c: ChainConfig, timeStamp: EthTime, parent: BlockHeader): DifficultyInt =
   let next = parent.blockNumber + bigOne
   if next >= c.muirGlacierBlock:
-    result = calcDifficultyGlacierMuir(timeStamp, parent)
+    result = calcDifficultyMuirGlacier(timeStamp, parent)
   elif next >= c.constantinopleBlock:
     result = calcDifficultyConstantinople(timeStamp, parent)
   elif next >= c.byzantiumBlock:
diff --git a/tests/test_difficulty.nim b/tests/test_difficulty.nim
index b13e5d142..d7b53c6e9 100644
--- a/tests/test_difficulty.nim
+++ b/tests/test_difficulty.nim
@@ -70,9 +70,9 @@ proc difficultyMain*() =
     ropstenConfig.calcDifficulty(timeStamp, parent)
 
   suite "DifficultyTest":
-    runTests("EIP2384_random_to20M", true, calcDifficultyGlacierMuir)
-    runTests("EIP2384_random", true, calcDifficultyGlacierMuir)
-    runTests("EIP2384", true, calcDifficultyGlacierMuir)
+    runTests("EIP2384_random_to20M", true, calcDifficultyMuirGlacier)
+    runTests("EIP2384_random", true, calcDifficultyMuirGlacier)
+    runTests("EIP2384", true, calcDifficultyMuirGlacier)
     runTests("Byzantium", true, calcDifficultyByzantium)
     runTests("Constantinople", true, calcDifficultyConstantinople)
     runTests("Homestead", true, calcDifficultyHomestead)