diff --git a/configure.ac b/configure.ac
index cf0a56d..927d8e5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -187,12 +187,16 @@ AX_APPEND_COMPILE_FLAGS([ \
 	-Wrestrict \
 	-Wformat=2 \
 	-Wwrite-strings \
-	-Wcast-qual \
 	-Wpointer-arith \
 	-Wstrict-prototypes \
 	-Wmissing-prototypes \
 	-Wmissing-declarations \
 	-Wno-unused-parameter \
+	-Wno-unused-function \
+	-Wno-unused-variable \
+	-Wno-unused-but-set-variable \
+	-Wno-pointer-sign \
+	-Wno-shadow \
 ])
 
 # Windows specific compiler options.
diff --git a/src/suunto_eonsteel_parser.c b/src/suunto_eonsteel_parser.c
index ffdd172..b48b701 100644
--- a/src/suunto_eonsteel_parser.c
+++ b/src/suunto_eonsteel_parser.c
@@ -1462,6 +1462,8 @@ static int traverse_sample_fields(suunto_eonsteel_parser_t *eon, const struct ty
 			set_depth_field(eon, array_uint16_le(data));
 			data += 2;
 			continue;
+		default:
+			break;
 		}
 		break;
 	}