diff --git a/pd/src/s_file.c b/pd/src/s_file.c
index ebacc2052f877b71d7460f8fce31483beb93b489..5527e1a33d27c92a7ad98becb1d4e649324d3d7b 100644
--- a/pd/src/s_file.c
+++ b/pd/src/s_file.c
@@ -181,7 +181,7 @@ static int sys_getpreference(const char *key, char *value, int size)
     HKEY hkey;
     DWORD bigsize = size;
     LONG err = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
-        "Software\\Pd-extended", 0,  KEY_QUERY_VALUE, &hkey);
+        "Software\\Purr-Data", 0,  KEY_QUERY_VALUE, &hkey);
     if (err != ERROR_SUCCESS)
     {
         return (0);
@@ -208,7 +208,7 @@ static void sys_putpreference(const char *key, const char *value)
 {
     HKEY hkey;
     LONG err = RegCreateKeyEx(HKEY_LOCAL_MACHINE,
-        "Software\\Pd-extended", 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE,
+        "Software\\Purr-Data", 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE,
         NULL, &hkey, NULL);
     if (err != ERROR_SUCCESS)
     {