diff --git a/docs/api/srfi/132.md b/docs/api/srfi/132.md
index 729b2afb..4445c3e5 100644
--- a/docs/api/srfi/132.md
+++ b/docs/api/srfi/132.md
@@ -95,7 +95,7 @@ This procedure does not alter its input vector, but rather newly allocates and r
 
 # vector-delete-neighbor-dups!
 
-(vector-delete-neighbor-dups! = v [ start [ end ] ])
+    (vector-delete-neighbor-dups! = v [ start [ end ] ])
 
 This procedure reuses its input vector to hold the answer, packing it into the index range [start, newend), where newend is the non-negative exact integer that is returned as its value. The vector is not altered outside the range [start, newend).