diff --git a/common/common.h b/common/common.h
index e7b1974..a5fb2fc 100644
--- a/common/common.h
+++ b/common/common.h
@@ -456,8 +456,8 @@ typedef enum
 #endif
 
 #if defined CONFIG_DIALOG || ( (0x039999 >= 0x040000))
-#define TQTCURVE_PREVIEW_CONFIG      "TQTCURVE_PREVIEW_CONFIG"
-#define TQTCURVE_PREVIEW_CONFIG_FULL "TQTCURVE_PREVIEW_CONFIG_FULL"
+#define TQTCURVE_PREVIEW_CONFIG      "QTCURVE_PREVIEW_CONFIG"
+#define TQTCURVE_PREVIEW_CONFIG_FULL "QTCURVE_PREVIEW_CONFIG_FULL"
 
 typedef enum
 {
diff --git a/common/config_file.c b/common/config_file.c
index a144ae6..126838f 100644
--- a/common/config_file.c
+++ b/common/config_file.c
@@ -1599,7 +1599,7 @@ static bool readConfig(const char *file, Options *opts, Options *defOpts)
 #ifdef __cplusplus
     if(file.isEmpty())
     {
-        const char *env=getenv("TQTCURVE_CONFIG_FILE");
+        const char *env=getenv("QTCURVE_CONFIG_FILE");
 
         if(NULL!=env)
             return readConfig(env, opts, defOpts);
@@ -1620,7 +1620,7 @@ static bool readConfig(const char *file, Options *opts, Options *defOpts)
 #else
     if(!file)
     {
-        const char *env=getenv("TQTCURVE_CONFIG_FILE");
+        const char *env=getenv("QTCURVE_CONFIG_FILE");
 
         if(NULL!=env)
             return readConfig(env, opts, defOpts);
diff --git a/style/qtcurve.cpp b/style/qtcurve.cpp
index 91eaa24..6661d3b 100644
--- a/style/qtcurve.cpp
+++ b/style/qtcurve.cpp
@@ -1155,7 +1155,7 @@ void TQtCurveStyle::polish(TQApplication *app)
 {
     TQString appName(getFile(app->argv()[0]));
 
-    if(NULL!=getenv("TQTCURVE_DEBUG"))
+    if(NULL!=getenv("QTCURVE_DEBUG"))
         std::cout << "TQtCurve: Application name: \"" << appName.latin1() << "\"\n";
 
     if ("kicker"==appName || "appletproxy"==appName)