diff --git a/agb/Cargo.toml b/agb/Cargo.toml
index b2670909..d015d115 100644
--- a/agb/Cargo.toml
+++ b/agb/Cargo.toml
@@ -34,4 +34,3 @@ debug = true
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/book/games/pong/Cargo.toml b/book/games/pong/Cargo.toml
index 7c0dd1d7..ff848be3 100644
--- a/book/games/pong/Cargo.toml
+++ b/book/games/pong/Cargo.toml
@@ -16,4 +16,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/combo/Cargo.toml b/examples/combo/Cargo.toml
index 2c31266e..d08f4096 100644
--- a/examples/combo/Cargo.toml
+++ b/examples/combo/Cargo.toml
@@ -21,4 +21,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/hyperspace-roll/Cargo.toml b/examples/hyperspace-roll/Cargo.toml
index 5557b1a3..4d115f63 100644
--- a/examples/hyperspace-roll/Cargo.toml
+++ b/examples/hyperspace-roll/Cargo.toml
@@ -16,4 +16,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/the-hat-chooses-the-wizard/Cargo.toml b/examples/the-hat-chooses-the-wizard/Cargo.toml
index 18bc73b0..3ed32576 100644
--- a/examples/the-hat-chooses-the-wizard/Cargo.toml
+++ b/examples/the-hat-chooses-the-wizard/Cargo.toml
@@ -22,4 +22,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/examples/the-purple-night/Cargo.toml b/examples/the-purple-night/Cargo.toml
index 0b77cded..343a64df 100644
--- a/examples/the-purple-night/Cargo.toml
+++ b/examples/the-purple-night/Cargo.toml
@@ -23,4 +23,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1
diff --git a/template/Cargo.toml b/template/Cargo.toml
index 3cd11cb2..9c50bdbc 100644
--- a/template/Cargo.toml
+++ b/template/Cargo.toml
@@ -18,4 +18,3 @@ codegen-units = 1
 opt-level = 3
 lto = "fat"
 debug = true
-codegen-units = 1