diff --git a/pilout/src/pilout.proto b/pilout/src/pilout.proto
index 042b86a2..211f40a5 100644
--- a/pilout/src/pilout.proto
+++ b/pilout/src/pilout.proto
@@ -129,13 +129,6 @@ message Air {
     repeated Constraint constraints = 7;
     repeated AirValue airValues = 8;        // stage airvalues
     bool aggregable = 9;
-    repeated CustomCommit customCommits = 10;
-}
-
-message CustomCommit {
-    optional string name = 1;
-    repeated GlobalOperand.PublicValue publicValues = 2;
-    repeated uint32 stageWidths = 3;    // stage widths including stage 0 !!
 }
 
 message AirValue {
@@ -223,13 +216,6 @@ message Operand {
         sint32 rowOffset = 3;
     }
 
-    message CustomCol {
-        uint32 commitId = 1;
-        uint32 stage = 2;
-        uint32 colIdx = 3;      // absolute idx relative to the stage
-        sint32 rowOffset = 4;
-    }
-
     message Expression {
         uint32 idx = 1;
     }
@@ -245,7 +231,6 @@ message Operand {
         WitnessCol witnessCol = 8;
         Expression expression = 9;
         AirValue airValue = 10;
-        CustomCol customCol = 11;
     }
 }
 
@@ -290,7 +275,6 @@ enum SymbolType {
     PUBLIC_TABLE = 7;
     CHALLENGE = 8;
     AIR_VALUE = 9;
-    CUSTOM_COL = 10;
 }
 
 message Symbol {
@@ -302,8 +286,7 @@ message Symbol {
     optional uint32 stage = 6;
     uint32 dim = 7;
     repeated uint32 lengths = 8;
-    optional uint32 commitId = 9;
-    optional string debugLine = 10;
+    optional string debugLine = 9;
 }
 
 // ================ Hints ================