diff --git a/src/libpw3270cpp/remote.cc b/src/libpw3270cpp/remote.cc
index 6705427..4f06450 100644
--- a/src/libpw3270cpp/remote.cc
+++ b/src/libpw3270cpp/remote.cc
@@ -421,7 +421,7 @@
 			val = this->sequence;
 			while(val > 0)
 			{
-				char str[] = { 'a'+(val % 25), 0 };
+				char str[] = { (char) ('a'+(val % 25)), 0 };
 				name.append(str);
 				val /= 25;
 			}
diff --git a/src/libpw3270cpp/service.cc b/src/libpw3270cpp/service.cc
index def9b83..5d3962d 100644
--- a/src/libpw3270cpp/service.cc
+++ b/src/libpw3270cpp/service.cc
@@ -477,12 +477,12 @@
 
 		virtual const char * asc2ebc(unsigned char *str, int sz = -1)
 		{
-			return str;
+			return (const char *) str;
 		}
 
 		virtual const char * ebc2asc(unsigned char *str, int sz = -1)
 		{
-			return str;
+			return (const char *) str;
 		}
 
 		virtual int set_cursor_position(int row, int col)
--
libgit2 0.21.2