diff a/src/hotspot/os/aix/os_aix.cpp b/src/hotspot/os/aix/os_aix.cpp
--- a/src/hotspot/os/aix/os_aix.cpp
+++ b/src/hotspot/os/aix/os_aix.cpp
@@ -552,11 +552,11 @@
   // Note that the space for the trailing null is provided
   // by the nulls included by the sizeof operator.
   const size_t bufsize =
     MAX2((size_t)MAXPATHLEN,  // For dll_dir & friends.
          (size_t)MAXPATHLEN + sizeof(EXTENSIONS_DIR)); // extensions dir
-  char *buf = (char *)NEW_C_HEAP_ARRAY(char, bufsize, mtInternal);
+  char *buf = NEW_C_HEAP_ARRAY(char, bufsize, mtInternal);
 
   // sysclasspath, java_home, dll_dir
   {
     char *pslash;
     os::jvm_path(buf, bufsize);
@@ -594,11 +594,11 @@
   const char *v_colon = ":";
   if (v == NULL) { v = ""; v_colon = ""; }
 
   // Concatenate user and invariant part of ld_library_path.
   // That's +1 for the colon and +1 for the trailing '\0'.
-  char *ld_library_path = (char *)NEW_C_HEAP_ARRAY(char, strlen(v) + 1 + sizeof(DEFAULT_LIBPATH) + 1, mtInternal);
+  char *ld_library_path = NEW_C_HEAP_ARRAY(char, strlen(v) + 1 + sizeof(DEFAULT_LIBPATH) + 1, mtInternal);
   sprintf(ld_library_path, "%s%s" DEFAULT_LIBPATH, v, v_colon);
   Arguments::set_library_path(ld_library_path);
   FREE_C_HEAP_ARRAY(char, ld_library_path);
 
   // Extensions directories.