diff --git a/src/app.c b/src/app.c

index bf781c03..f8dc5697 100644

--- a/src/app.c

+++ b/src/app.c

@@ -122,6 +122,7 @@ struct Impl_App {

 uint32_t     lastTickerTime;

 uint32_t     elapsedSinceLastTicker;

 iBool        isRunning;

+ iBool isRunningUnderWindowSystem;

#if defined (LAGRANGE_ENABLE_IDLE_SLEEP)

 iBool        isIdling;

 uint32_t     lastEventTime;

@@ -626,6 +627,12 @@ static iBool hasCommandLineOpenableScheme_(const iRangecc uri) {

}



static void init_App_(iApp *d, int argc, char **argv) {

+#if defined (iPlatformLinux)

+ d->isRunningUnderWindowSystem = !iCmpStr(SDL_GetCurrentVideoDriver(), "x11") ||

+ !iCmpStr(SDL_GetCurrentVideoDriver(), "wayland");

+#else

+ d->isRunningUnderWindowSystem = iTrue;

+#endif

 init_CommandLine(&d->args, argc, argv);

 /* Where was the app started from? We ask SDL first because the command line alone is

    not a reliable source of this information, particularly when it comes to different

@@ -749,7 +756,8 @@ static void init_App_(iApp *d, int argc, char **argv) {

 mulfv_I2(&d->initialWindowRect.size, desktopDPI_Win32());

#endif

#if defined (iPlatformLinux)

- /* Scale by the primary (?) monitor DPI. */ {

+ /* Scale by the primary (?) monitor DPI. */ 

+ if (isRunningUnderWindowSystem_App()) {

     float vdpi;

     SDL_GetDisplayDPI(0, NULL, NULL, &vdpi);

     const float factor = vdpi / 96.0f;

@@ -1582,6 +1590,10 @@ enum iAppDeviceType deviceType_App(void) {

#endif

}



+iBool isRunningUnderWindowSystem_App(void) {

+ return app_.isRunningUnderWindowSystem;

+}

+

iGmCerts *certs_App(void) {

 return app_.certs;

}

diff --git a/src/app.h b/src/app.h

index 5d1d42e1..55bec5a6 100644

--- a/src/app.h

+++ b/src/app.h

@@ -87,6 +87,8 @@ iBool isLandscape_App (void);

iLocalDef iBool isPortrait_App (void) { return !isLandscape_App(); }

enum iAppDeviceType deviceType_App (void);

iLocalDef iBool isPortraitPhone_App (void) { return isPortrait_App() && deviceType_App() == phone_AppDeviceType; }

+iBool isRunningUnderWindowSystem_App (void);

+

iGmCerts * certs_App (void);

iVisited * visited_App (void);

iBookmarks * bookmarks_App (void);

diff --git a/src/ui/window.c b/src/ui/window.c

index ebb4d1a8..f8391ed9 100644

--- a/src/ui/window.c

+++ b/src/ui/window.c

@@ -278,11 +278,14 @@ static float displayScale_Window_(const iWindow *d) {

 iUnused(d);

 return desktopDPI_Win32();

#else

- float vdpi = 0.0f;

- SDL_GetDisplayDPI(SDL_GetWindowDisplayIndex(d->win), NULL, NULL, &vdpi);

-// printf("DPI: %f\n", vdpi);

- const float factor = vdpi / baseDPI_Window / pixelRatio_Window_(d);

- return iMax(1.0f, factor);

+ if (isRunningUnderWindowSystem_App()) {

+ float vdpi = 0.0f;

+ SDL_GetDisplayDPI(SDL_GetWindowDisplayIndex(d->win), NULL, NULL, &vdpi);

+// printf("DPI: %f\n", vdpi);

+ const float factor = vdpi / baseDPI_Window / pixelRatio_Window_(d);

+ return iMax(1.0f, factor);

+ }

+ return 1.0f;

#endif

}