diff --git a/vtparse/src/lib.rs b/vtparse/src/lib.rs
index 8f4483b91..5a1115f49 100644
--- a/vtparse/src/lib.rs
+++ b/vtparse/src/lib.rs
@@ -397,12 +397,21 @@ pub struct VTParser {
 /// and I are intermediate bytes in the range 0x20-0x2F
 /// and F is the final byte in the range 0x40-0x7E
 ///
-#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)]
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
 pub enum CsiParam {
     Integer(i64),
     P(u8),
 }
 
+impl core::fmt::Debug for CsiParam {
+    fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::fmt::Result {
+        match self {
+            Self::Integer(i) => write!(fmt, "Integer({i})"),
+            Self::P(n) => write!(fmt, "P({})", char::from(*n)),
+        }
+    }
+}
+
 impl Default for CsiParam {
     fn default() -> Self {
         Self::Integer(0)