diff --git a/src/MNH/write_aircraft_balloon.f90 b/src/MNH/write_aircraft_balloon.f90
index 913947e848a909241f721c412479f74d181dbb6d..af24818337d91b9961abf47ad23d5591d29a0106 100644
--- a/src/MNH/write_aircraft_balloon.f90
+++ b/src/MNH/write_aircraft_balloon.f90
@@ -66,6 +66,7 @@ END MODULE MODI_WRITE_AIRCRAFT_BALLOON
 !  P. Wautelet 29/01/2019: bug: moved an instruction later (to prevent access to a not allocated array)
 !  P. Wautelet 13/09/2019: budget: simplify and modernize date/time management
 !  P. Wautelet 02/10/2020: bugfix: YGROUP/YGROUPZ were too small
+!  P. Wautelet 09/10/2020: bugfix: correction on IPROCZ when not LIMA (condition was wrong)
 ! --------------------------------------------------------------------------
 !
 !*      0. DECLARATIONS
@@ -224,7 +225,7 @@ IPROCZ = SIZE(TPFLYER%RTZ,2)+ SIZE(TPFLYER%RZ,2)+ SIZE(TPFLYER%RZ,3)+  SIZE(TPFL
          SIZE(TPFLYER%IWCZ,2)+ SIZE(TPFLYER%LWCZ,2) + SIZE(TPFLYER%CIZ,2) + &
          SIZE(TPFLYER%ZZ,2)
 
-IF (NSV_LIMA_BEG/=NSV_LIMA_END) IPROCZ= IPROCZ+ SIZE(TPFLYER%CCZ,2) + SIZE(TPFLYER%CRZ,2)
+IF (NSV_LIMA_BEG<=NSV_LIMA_END) IPROCZ= IPROCZ+ SIZE(TPFLYER%CCZ,2) + SIZE(TPFLYER%CRZ,2)
 IF (SIZE(TPFLYER%TKE  )>0) IPROC = IPROC + 1
 IF (LDIAG_IN_RUN) IPROC = IPROC + 1
 IF (LORILAM) IPROC = IPROC + JPMODE*3