diff --git a/lib/binary.tri b/lib/binary.tri
index a5eea6b..bca4bd8 100644
--- a/lib/binary.tri
+++ b/lib/binary.tri
@@ -44,7 +44,7 @@ expectBytes = (expected bs :
       matchBool
         (ok unit rest)
         (err errUnexpectedBytes bs)
-        (bytesEq taken expected))
+        (bytesEq? taken expected))
     (readBytes (bytesLength expected) bs))
 
 expectU8 = (expected bs :
@@ -54,7 +54,7 @@ expectU8 = (expected bs :
       matchBool
         (ok unit rest)
         (err errUnexpectedByte bs)
-        (byteEq actual expected))
+        (byteEq? actual expected))
     (readU8 bs))
 
 read2 = (bs : readBytes 2 bs)
diff --git a/lib/bytes.tri b/lib/bytes.tri
index 4e40fe9..ffa46b6 100644
--- a/lib/bytes.tri
+++ b/lib/bytes.tri
@@ -4,13 +4,13 @@
 nothing = t
 just = x : t x
 
-bytesIsNil = emptyList?
+bytesNil? = emptyList?
 
 bytesHead = matchList nothing (h _ : just h)
 
 bytesTail = matchList nothing (_ r : just r)
 
-byteEq = equal?
+byteEq? = equal?
 bytesLength = length
 bytesAppend = append
 
@@ -38,12 +38,12 @@ bytesDrop = n bytes : bytesDrop_ n 0 bytes
 
 bytesSplitAt = n bytes : pair (bytesTake n bytes) (bytesDrop n bytes)
 
-bytesEq = y (self xs ys :
+bytesEq? = y (self xs ys :
   matchList
     (matchList true (_ _ : false) ys)
     (xh xt :
       matchList
         false
-        (yh yt : and? (byteEq xh yh) (self xt yt))
+        (yh yt : and? (byteEq? xh yh) (self xt yt))
         ys)
     xs)
diff --git a/test/Spec.hs b/test/Spec.hs
index 861918e..a45cd4d 100644
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -1054,13 +1054,13 @@ bytesT = ofList . fmap byteT
 byteListUtilities :: TestTree
 byteListUtilities = testGroup "Byte List Utility Tests"
   [ testCase "isNil: empty list is nil" $ do
-      let input = "bytesIsNil []"
+      let input = "bytesNil? []"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= trueT
 
   , testCase "isNil: non-empty list is not nil" $ do
-      let input = "bytesIsNil [(1)]"
+      let input = "bytesNil? [(1)]"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT
@@ -1180,49 +1180,49 @@ byteListUtilities = testGroup "Byte List Utility Tests"
       result env @?= pairT (bytesT [1,2]) (bytesT [])
 
   , testCase "byteEq: equal bytes are equal" $ do
-      let input = "byteEq 1 1"
+      let input = "byteEq? 1 1"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= trueT
 
   , testCase "byteEq: unequal bytes are not equal" $ do
-      let input = "byteEq 1 2"
+      let input = "byteEq? 1 2"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT
 
   , testCase "bytesEq: empty == empty" $ do
-      let input = "bytesEq [] []"
+      let input = "bytesEq? [] []"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= trueT
 
   , testCase "bytesEq: empty != [1]" $ do
-      let input = "bytesEq [] [(1)]"
+      let input = "bytesEq? [] [(1)]"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT
 
   , testCase "bytesEq: [1] != empty" $ do
-      let input = "bytesEq [(1)] []"
+      let input = "bytesEq? [(1)] []"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT
 
   , testCase "bytesEq: equal lists are equal" $ do
-      let input = "bytesEq [(1) (2) (3)] [(1) (2) (3)]"
+      let input = "bytesEq? [(1) (2) (3)] [(1) (2) (3)]"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= trueT
 
   , testCase "bytesEq: different last element" $ do
-      let input = "bytesEq [(1) (2) (3)] [(1) (2) (4)]"
+      let input = "bytesEq? [(1) (2) (3)] [(1) (2) (4)]"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT
 
   , testCase "bytesEq: different lengths" $ do
-      let input = "bytesEq [(1) (2)] [(1) (2) (3)]"
+      let input = "bytesEq? [(1) (2)] [(1) (2) (3)]"
       library <- evaluateFile "./lib/bytes.tri"
       let env = evalTricu library (parseTricu input)
       result env @?= falseT