diff --git a/modules/libcom/src/as/asLibRoutines.c b/modules/libcom/src/as/asLibRoutines.c
index 59dd80bda..571471e2a 100644
--- a/modules/libcom/src/as/asLibRoutines.c
+++ b/modules/libcom/src/as/asLibRoutines.c
@@ -366,7 +366,7 @@ long epicsStdCall asAddClient(ASCLIENTPVT *pasClientPvt,ASMEMBERPVT asMemberPvt,
 {
     ASGMEMBER   *pasgmember = asMemberPvt;
     ASGCLIENT   *pasgclient;
-    int         len, i;
+    size_t      len, i;
 
     long        status;
     if(!asActive) return(S_asLib_asNotActive);
@@ -394,7 +394,7 @@ long epicsStdCall asChangeClient(
 {
     ASGCLIENT   *pasgclient = asClientPvt;
     long        status;
-    int         len, i;
+    size_t      len, i;
 
     if(!asActive) return(S_asLib_asNotActive);
     if(!pasgclient) return(S_asLib_badClient);
diff --git a/modules/libcom/src/gpHash/gpHashLib.c b/modules/libcom/src/gpHash/gpHashLib.c
index 3ed7de4f1..c4991a873 100644
--- a/modules/libcom/src/gpHash/gpHashLib.c
+++ b/modules/libcom/src/gpHash/gpHashLib.c
@@ -63,7 +63,7 @@ GPHENTRY * epicsStdCall gphFindParse(gphPvt *pgphPvt, const char *name, size_t l
     ELLLIST **paplist;
     ELLLIST *gphlist;
     GPHENTRY *pgphNode;
-    int hash;
+    unsigned hash;
 
     if (pgphPvt == NULL) return NULL;
     paplist = pgphPvt->paplist;
@@ -99,7 +99,7 @@ GPHENTRY * epicsStdCall gphAdd(gphPvt *pgphPvt, const char *name, void *pvtid)
     ELLLIST **paplist;
     ELLLIST *plist;
     GPHENTRY *pgphNode;
-    int hash;
+    unsigned hash;
 
     if (pgphPvt == NULL) return NULL;
     paplist = pgphPvt->paplist;
@@ -144,7 +144,7 @@ void epicsStdCall gphDelete(gphPvt *pgphPvt, const char *name, void *pvtid)
     ELLLIST **paplist;
     ELLLIST *plist = NULL;
     GPHENTRY *pgphNode;
-    int hash;
+    unsigned hash;
 
     if (pgphPvt == NULL) return;
     paplist = pgphPvt->paplist;