diff --git a/include/__locale b/include/__locale
index 2c144d2..2390768 100644
--- a/include/__locale
+++ b/include/__locale
@@ -363,7 +363,7 @@
 # else
     static const mask blank  = _CTYPE_B;
 # endif
-#elif defined(__sun__)
+#elif defined(__sun__) && defined(_AIX)
     typedef unsigned int mask;
     static const mask space  = _ISSPACE;
     static const mask print  = _ISPRINT;
diff --git a/include/support/ibm/xlocale.h b/include/support/ibm/xlocale.h
index fa349e0..8d99a5c 100644
--- a/include/support/ibm/xlocale.h
+++ b/include/support/ibm/xlocale.h
@@ -263,8 +263,6 @@
 }
 #endif // !defined(_AIX71)
 
-locale_t cloc(void);
-
 // strftime_l() is defined by POSIX. However, AIX 7.1 does not have it
 // implemented yet.
 static inline
diff --git a/src/locale.cpp b/src/locale.cpp
index 49ffd8e..3f6d246 100644
--- a/src/locale.cpp
+++ b/src/locale.cpp
@@ -109,6 +109,11 @@
 
 }
 
+#if defined(_AIX)
+// Set priority to INT_MIN + 256 + 150
+# pragma priority ( -2147483242 )
+#endif
+
 const locale::category locale::none;
 const locale::category locale::collate;
 const locale::category locale::ctype;