diff --git a/ionc/ion_allocation.c b/ionc/ion_allocation.c
index f92d430..477261a 100644
--- a/ionc/ion_allocation.c
+++ b/ionc/ion_allocation.c
@@ -92,7 +92,7 @@ iERR _ion_strdup(hOWNER owner, iSTRING dst, iSTRING src)
         dst->value = (BYTE *)ion_alloc_with_owner(owner, (is_empty) ? 1 : src->length);
         if (!dst->value) FAILWITH(IERR_NO_MEMORY);
     }
-    memcpy(dst->value, (is_empty) ? "\0" : src->value, (is_empty) ? 1 : src->length);
+    memcpy(dst->value, (is_empty) ? (BYTE*)"\0" : src->value, (is_empty) ? 1 : src->length);
 
     dst->length = src->length;
 
diff --git a/ionc/ion_internal.h b/ionc/ion_internal.h
index 9ff5eed..148e672 100644
--- a/ionc/ion_internal.h
+++ b/ionc/ion_internal.h
@@ -109,7 +109,7 @@ GLOBAL BOOL _debug_on           INITTO(TRUE);
                                   (xb) = (*(xh)->_curr++);                      \
                                 }                                               \
                                 else {                                          \
-                                  IONCHECK(ion_stream_read_byte((xh), &(xb)));  \
+                                  IONCHECK(ion_stream_read_byte((xh), (int *)&(xb)));  \
                                 } while(FALSE)
 
 // macro for read_byte