diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ee82f1f448..aeba430163 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2014-10-09  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	PR tdep/9390
+	* xstorxstormy16-tdep.c (xstormy16_analyze_prologue): Fix possible
+	typo when using logical AND to determine instruction type.
+
 2014-10-09  Yao Qi  <yao@codesourcery.com>
 
 	* infrun.c (handle_signal_stop): Remove local variable
diff --git a/gdb/xstormy16-tdep.c b/gdb/xstormy16-tdep.c
index af3ff32f03..9692742189 100644
--- a/gdb/xstormy16-tdep.c
+++ b/gdb/xstormy16-tdep.c
@@ -374,7 +374,7 @@ xstormy16_analyze_prologue (struct gdbarch *gdbarch,
       /* Probably only in optimized case but legal action for prologue.  */
       else if ((inst & 0xff00) == 0x4600	/* 46SD   mov rD, rS */
 	       && (inst & 0x00f0) >= 0x0020 && (inst & 0x00f0) <= 0x0070
-	       && (inst & 0x000f) >= 0x00a0 && (inst & 0x000f) <= 0x000d)
+	       && (inst & 0x000f) >= 0x000a && (inst & 0x000f) <= 0x000d)
 	;
 
       /* Optional copying of args in r2-r7 to stack.  */