diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30d3a01..816270c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ Types of changes
 ### Fixed
 
 - All prebuilt binaries are now fully statically linked.
+- An attempt to subtract with overflow in some scenarios of a `let-in` expression
 
 ## [0.3.0] - 2022-02-18
 
diff --git a/src/rules/let_in.rs b/src/rules/let_in.rs
index 601cb68..853c3d9 100644
--- a/src/rules/let_in.rs
+++ b/src/rules/let_in.rs
@@ -116,6 +116,7 @@ pub fn rule(
     let child_expr = children.get_next().unwrap();
 
     // in
+    let mut dedent = false;
     steps.push_back(crate::builder::Step::Format(child_in.element));
     match layout {
         crate::config::Layout::Tall => {
@@ -131,6 +132,7 @@ pub fn rule(
             {
                 steps.push_back(crate::builder::Step::Whitespace);
             } else {
+                dedent = true;
                 steps.push_back(crate::builder::Step::Indent);
                 steps.push_back(crate::builder::Step::NewLine);
                 steps.push_back(crate::builder::Step::Pad);
@@ -152,7 +154,9 @@ pub fn rule(
             steps.push_back(crate::builder::Step::FormatWider(
                 child_expr.element,
             ));
-            steps.push_back(crate::builder::Step::Dedent);
+            if dedent {
+                steps.push_back(crate::builder::Step::Dedent);
+            }
         }
         crate::config::Layout::Wide => {
             steps.push_back(crate::builder::Step::Whitespace);