diff --git a/src/cdi.inc b/src/cdi.inc
index f0a60b1c950601d0e18f23d3133c5a38f06d3371..bb39740908daeb607545629efbbf85db16d503ce 100644
--- a/src/cdi.inc
+++ b/src/cdi.inc
@@ -4,7 +4,7 @@
 !
 ! Author:
 ! -------
-! Uwe Schulzweida, MPI-MET, Hamburg,   September 2022
+! Uwe Schulzweida, MPI-MET, Hamburg,   October 2022
 !
 
 !
@@ -293,6 +293,8 @@
       PARAMETER (CDI_PROJ_SINU          = 24)
       INTEGER    CDI_PROJ_STERE
       PARAMETER (CDI_PROJ_STERE         = 25)
+      INTEGER    CDI_PROJ_HEALPIX
+      PARAMETER (CDI_PROJ_HEALPIX       = 26)
 !
 !  ZAXIS types
 !
diff --git a/src/grid.h b/src/grid.h
index a1d0e751740e8667d8e1d58b51b016c197f14b01..3beacc216481bd175bcfef43bce7c8c8aa026fe6 100644
--- a/src/grid.h
+++ b/src/grid.h
@@ -148,8 +148,8 @@ struct addIfNewRes cdiVlistAddGridIfNew(int vlistID, grid_t *grid, int mode);
 int gridVerifyProjParamsLCC(struct CDI_GridProjParams *gpp);
 int gridVerifyProjParamsSTERE(struct CDI_GridProjParams *gpp);
 
-bool isGaussianLatitudes(SizeType nlats, const double *latitudes);
-void gaussianLatitudes(SizeType nlats, double *latitudes, double *weights);
+bool isGaussianLatitudes(size_t nlats, const double *latitudes);
+void gaussianLatitudes(size_t nlats, double *latitudes, double *weights);
 
 #endif
 /*
diff --git a/src/mo_cdi.f90 b/src/mo_cdi.f90
index 85f4c88eac1fee2e1efc1ccc173fe5a8d7fc3be9..873220153e6bca71b1c38446da904e2fd777709c 100644
--- a/src/mo_cdi.f90
+++ b/src/mo_cdi.f90
@@ -147,6 +147,7 @@ module mo_cdi
   integer(c_int), public, parameter :: CDI_PROJ_LAEA = 23
   integer(c_int), public, parameter :: CDI_PROJ_SINU = 24
   integer(c_int), public, parameter :: CDI_PROJ_STERE = 25
+  integer(c_int), public, parameter :: CDI_PROJ_HEALPIX = 26
   integer(c_int), public, parameter :: ZAXIS_SURFACE = 0
   integer(c_int), public, parameter :: ZAXIS_GENERIC = 1
   integer(c_int), public, parameter :: ZAXIS_HYBRID = 2