diff --git a/src/config/Build.go b/src/config/Build.go
index 6779667..93dc629 100644
--- a/src/config/Build.go
+++ b/src/config/Build.go
@@ -9,5 +9,4 @@ type Build struct {
 	Dry           bool
 	FoldConstants bool
 	LintBinaryOps bool
-	RemoveCopies  bool
 }
\ No newline at end of file
diff --git a/src/config/Optimize.go b/src/config/Optimize.go
index 3570854..2aeb77a 100644
--- a/src/config/Optimize.go
+++ b/src/config/Optimize.go
@@ -3,5 +3,4 @@ package config
 // Optimize enables or disables the optimizer.
 func (build *Build) Optimize(enabled bool) {
 	build.FoldConstants = enabled
-	build.RemoveCopies = enabled
 }
\ No newline at end of file
diff --git a/src/core/optimize.go b/src/core/optimize.go
index 4a6873c..b575bec 100644
--- a/src/core/optimize.go
+++ b/src/core/optimize.go
@@ -24,14 +24,6 @@ func (f *Function) optimize() error {
 		f.Block().Append(&ssa.Return{})
 	}
 
-	// Copies were inserted for assignments to be safe in case
-	// loops would replace an existing value with a phi inside
-	// the loop. Now that all the loop replacements happened,
-	// we can safely remove the copies.
-	if f.Env.Build.RemoveCopies {
-		f.removeCopies()
-	}
-
 	// Lint binary operations that can often be reduced to
 	// simpler expressions.
 	if f.Env.Build.LintBinaryOps {
diff --git a/src/core/removeCopies.go b/src/core/removeCopies.go
deleted file mode 100644
index 9f9d6d0..0000000
--- a/src/core/removeCopies.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package core
-
-import "git.urbach.dev/cli/q/src/ssa"
-
-// removeCopies removes copy operations.
-func (f *Function) removeCopies() {
-	var replacements map[ssa.Value]ssa.Value
-
-	for _, block := range f.Blocks {
-		if block.Loop != nil {
-			continue
-		}
-
-		for i, value := range block.Instructions {
-			copy, isCopy := value.(*ssa.Copy)
-
-			if !isCopy {
-				continue
-			}
-
-			if copy.Typ != copy.Value.Type() {
-				continue
-			}
-
-			if replacements == nil {
-				replacements = make(map[ssa.Value]ssa.Value)
-			}
-
-			original := copy.Value
-
-			for {
-				originalCopy, originalIsCopy := original.(*ssa.Copy)
-
-				if !originalIsCopy {
-					break
-				}
-
-				original = originalCopy.Value
-			}
-
-			replacements[copy] = original
-			block.RemoveAt(i)
-		}
-
-		block.RemoveNilValues()
-	}
-
-	for old, new := range replacements {
-		f.IR.ReplaceAll(old, new)
-	}
-}
\ No newline at end of file
diff --git a/tests/max.q b/tests/max.q
new file mode 100644
index 0000000..5407f00
--- /dev/null
+++ b/tests/max.q
@@ -0,0 +1,11 @@
+main() {
+	a := 1
+	b := 2
+	max := a
+
+	if b > max {
+		max = b
+	}
+
+	assert max == 2
+}
\ No newline at end of file
diff --git a/tests/min.q b/tests/min.q
new file mode 100644
index 0000000..53d3646
--- /dev/null
+++ b/tests/min.q
@@ -0,0 +1,11 @@
+main() {
+	a := 1
+	b := 2
+	min := a
+
+	if b < min {
+		min = b
+	}
+
+	assert min == 1
+}
\ No newline at end of file
diff --git a/tests/tests_test.go b/tests/tests_test.go
index 9b02aed..f1b50de 100644
--- a/tests/tests_test.go
+++ b/tests/tests_test.go
@@ -53,6 +53,8 @@ var tests = []run{
 	{"phi-advanced", nil, "", "", 0},
 	{"phi-reassign", nil, "", "", 0},
 	{"phi-reassign-output", nil, "", "12345", 0},
+	{"min", nil, "", "", 0},
+	{"max", nil, "", "", 0},
 	{"hello", nil, "", "Hello\nHello\nHello\n", 0},
 	{"escape", nil, "", "a\tb\nc\td\n", 0},
 	{"script", nil, "", "Hello\n", 0},
@@ -131,13 +133,13 @@ var tests = []run{
 	{"pointer-to-pointer", nil, "", "", 0},
 	{"stack-pointer", nil, "", "", 0},
 	{"global", nil, "", "", 0},
+	{"c-length", nil, "", "", 0},
+	{"c-string", nil, "", "", 0},
 	{"cli-args", nil, "", "", 0},
 	{"cli-args", []string{"Hello"}, "", "Hello\n", 0},
 	{"cli-args", []string{"Hello", "World"}, "", "Hello\nWorld\n", 0},
 	{"cli-args", []string{"Hello", "世界"}, "", "Hello\n世界\n", 0},
 	{"cli-env", nil, "", "", 0},
-	{"c-length", nil, "", "", 0},
-	{"c-string", nil, "", "", 0},
 }
 
 func TestTests(t *testing.T) {