diff --git a/tracy/tracy/src/t2lat.cc b/tracy/tracy/src/t2lat.cc
index 6f4a027991e8d8356227ff854e8ab880ae9d4e74..6d60758905f75803d75f80bc34a3c7332c52992c 100644
--- a/tracy/tracy/src/t2lat.cc
+++ b/tracy/tracy/src/t2lat.cc
@@ -53,7 +53,7 @@ typedef enum
 // ring sym added
 // ff1sym ff2sym for quadrupole entrance and exit fringe field
 // ffscalingsym scaling factor for entrance and exit fringe field.  /*J.Zhang
-// tilt added for comptaibility with Tracy II
+// tilt added for compatibility with Tracy II
 /* p2c: t2lat.pas, line 52:
  * Note: Line breaker spent 0.0 seconds, 5000 tries on line 603 [251] */
 
@@ -3190,9 +3190,9 @@ static bool Lat_DealElement(FILE **fi_, FILE **fo_, long *cc_, long *ll_,
     <name> : insertion,              
              N = <number of thin lenses>,
              scaling1 or 2 = scaling factor: should be 1. Default value
-             file1 = <filename>, in lowercases (first order defaults)
-             file2 = <filename>, in lowercases (second order defauts)
-             method = <method>, ( 2 or 4. The method to divide Q into slices.)
+             file1 = <filename>, in lowercase (first order defaults)
+             file2 = <filename>, in lowercase (second order defaults)
+             method = <method>, ( 1 or 3. The method to divide Q into slices.)
              ( The detail of <method> will be discussed later.)
     
     Example
@@ -3322,12 +3322,12 @@ static bool Lat_DealElement(FILE **fi_, FILE **fo_, long *cc_, long *ll_,
 
             // check whether no Radia filename read: something is wrong
             if (!firstflag && !secondflag) {
-                printf("Erreur no Insertion filename found as"
+                printf("Error no Insertion filename found as"
                     " an input in lattice file\n");
                 exit_(-1);
             }
 
-            if (k2 == 3) { // cubic interpolation
+            if (k2 == 3 | k2 == 2) { // cubic interpolation
                 WITH5->linear = false;
             } else { // linear interpolation
                 WITH5->linear = true;