diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c
index cebbad2355..92c1375b15 100644
--- a/semihosting/arm-compat-semi.c
+++ b/semihosting/arm-compat-semi.c
@@ -92,21 +92,20 @@
 #define GDB_O_APPEND  0x008
 #define GDB_O_CREAT   0x200
 #define GDB_O_TRUNC   0x400
-#define GDB_O_BINARY  0
 
 static int gdb_open_modeflags[12] = {
     GDB_O_RDONLY,
-    GDB_O_RDONLY | GDB_O_BINARY,
+    GDB_O_RDONLY,
+    GDB_O_RDWR,
     GDB_O_RDWR,
-    GDB_O_RDWR | GDB_O_BINARY,
     GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC,
-    GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY,
+    GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC,
+    GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC,
     GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC,
-    GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY,
     GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND,
-    GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY,
+    GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND,
+    GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND,
     GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND,
-    GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY
 };
 
 static int open_modeflags[12] = {