diff --git a/libext/hds-v5 b/libext/hds-v5
index 72730776f4a..75544e9f04d 160000
--- a/libext/hds-v5
+++ b/libext/hds-v5
@@ -1 +1 @@
-Subproject commit 72730776f4a66704ccedd984c6af633e616cc968
+Subproject commit 75544e9f04dd87006e03fd428a1d3f0cf0fd1a51
diff --git a/libraries/hds-v4/datalter.c b/libraries/hds-v4/datalter.c
index ddd7a2906ff..76e0e34762c 100644
--- a/libraries/hds-v4/datalter.c
+++ b/libraries/hds-v4/datalter.c
@@ -22,7 +22,7 @@
 /* DAT_ALTER - Alter size of object */
 /*==================================*/
 int
-datAlter(const HDSLoc    *locator,
+datAlter(HDSLoc    *locator,
          int       ndim,
          const HDS_PTYPE dims[],
          int       *status)
diff --git a/libraries/hds-v4/hds.h b/libraries/hds-v4/hds.h
index f1012688f09..764092f3c9c 100644
--- a/libraries/hds-v4/hds.h
+++ b/libraries/hds-v4/hds.h
@@ -20,7 +20,7 @@
 /*=================================*/
 
 int
-datAlter(const HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
+datAlter(HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
 
 /*==========================*/
 /* datAnnul - Annul locator */
diff --git a/libraries/hds-v4/hds_v4.h b/libraries/hds-v4/hds_v4.h
index 9789e72b3da..fd069df3f88 100644
--- a/libraries/hds-v4/hds_v4.h
+++ b/libraries/hds-v4/hds_v4.h
@@ -17,7 +17,7 @@ building the library or using the installed version */
 /*=================================*/
 
 int
-datAlter_v4(const HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
+datAlter_v4(HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
 
 /*==========================*/
 /* datAnnul - Annul locator */
diff --git a/libraries/hds/hds.h b/libraries/hds/hds.h
index eb14d7564a2..ef43da68d82 100644
--- a/libraries/hds/hds.h
+++ b/libraries/hds/hds.h
@@ -17,7 +17,7 @@
 /*=================================*/
 
 int
-datAlter(const HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
+datAlter(HDSLoc *locator, int ndim, const hdsdim dims[], int *status);
 
 /*==========================*/
 /* datAnnul - Annul locator */
diff --git a/libraries/hds/hds_select.c b/libraries/hds/hds_select.c
index 2d6a53766bc..391e6e4e27b 100644
--- a/libraries/hds/hds_select.c
+++ b/libraries/hds/hds_select.c
@@ -23,7 +23,7 @@ static void EnterCheck( const char * func, int status ) { printf("Enter HDS rout
 /*=================================*/
 
 int
-datAlter(const HDSLoc *locator, int ndim, const hdsdim dims[], int *status) {
+datAlter(HDSLoc *locator, int ndim, const hdsdim dims[], int *status) {
 
   int retval = 0;
   int instat = *status;