diff --git a/src/common/turb/turb.F90 b/src/common/turb/turb.F90
index 3cf7afa999a48d7087cbd67d7c483183f9ed3804..e45f635130a33613f526d90e483544c03ed52d48 100644
--- a/src/common/turb/turb.F90
+++ b/src/common/turb/turb.F90
@@ -1731,7 +1731,7 @@ IF ( TURBN%CTURBDIM /= '1DIM' ) THEN
 END IF
 ! 1D turbulence scheme
 !$mnh_expand_array(JIJ=IIJB:IIJE,JK=IKTB:IKTE)
-PLM(IIJB:IIJE,IKTB:IKTE) = PZZ(IIJB:IIJE,IKL+IKTB:IKTE+IKL) - PZZ(IIJB:IIJE,IKTB:IKTE)
+PLM(IIJB:IIJE,IKTB:IKTE) = PZZ(IIJB:IIJE,IKTB+IKL:IKTE+IKL) - PZZ(IIJB:IIJE,IKTB:IKTE)
 !$mnh_end_expand_array(JIJ=IIJB:IIJE,JK=IKTB:IKTE)
 !$mnh_expand_array(JIJ=IIJB:IIJE)
 PLM(IIJB:IIJE,IKU) = PLM(IIJB:IIJE,IKE)