diff --git a/src/MNH/read_field.f90 b/src/MNH/read_field.f90
index cd5b98626f101e26f111b0f50e2bc77fda80771c..3f3fc638212f5bdd3225a182ca47d619138e126e 100644
--- a/src/MNH/read_field.f90
+++ b/src/MNH/read_field.f90
@@ -798,7 +798,7 @@ IF (NSV_CHACEND>=NSV_CHACBEG) THEN
     CNAMES(JSV-NSV_CHACBEG+NSV_CHGS+1) = UPCASE(CNAMES(JSV-NSV_CHACBEG+NSV_CHGS+1))
     SELECT CASE(HGETSVT(JSV))
       CASE ('READ')
-        TZFIELD%CMNHNAME   = TRIM(CNAMES(JSV-NSV_CHACBEG+NSV_CHGS+1))//'M'
+        TZFIELD%CMNHNAME   = TRIM(CNAMES(JSV-NSV_CHACBEG+NSV_CHGS+1))//'T'
         TZFIELD%CLONGNAME  = TRIM(TZFIELD%CMNHNAME)
         WRITE(TZFIELD%CCOMMENT,'(A6,A4,I3.3,A4)')'X_Y_Z_','CHAQ',JSV,' (M)'
         CALL IO_READ_FIELD(TPINIFILE,TZFIELD,PSVT(:,:,:,JSV))
@@ -1667,3 +1667,4 @@ END IF
 ! 
 !
 END SUBROUTINE READ_FIELD
+