diff --git a/dlls/wineps.drv/init.c b/dlls/wineps.drv/init.c
index ec4dc174cf9..2893c92d30f 100644
--- a/dlls/wineps.drv/init.c
+++ b/dlls/wineps.drv/init.c
@@ -21,6 +21,7 @@
 
 #include <stdarg.h>
 #include <string.h>
+#include <locale.h>
 
 #include "windef.h"
 #include "winbase.h"
@@ -87,6 +88,7 @@ static const PSDRV_DEVMODE DefaultDevmode =
 
 HINSTANCE PSDRV_hInstance = 0;
 HANDLE PSDRV_Heap = 0;
+_locale_t c_locale;
 
 static BOOL import_ntf_from_reg(void)
 {
@@ -294,6 +296,7 @@ BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
         {
             PSDRV_hInstance = hinst;
             DisableThreadLibraryCalls(hinst);
+            c_locale = _create_locale( LC_ALL, "C" );
 
             if (__wine_init_unix_call())
                 return FALSE;
@@ -319,6 +322,7 @@ BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 	case DLL_PROCESS_DETACH:
             if (reserved) break;
             WINE_UNIX_CALL(unix_free_printer_info, NULL);
+            _free_locale( c_locale );
 	    HeapDestroy( PSDRV_Heap );
             break;
     }
diff --git a/dlls/wineps.drv/ppd.c b/dlls/wineps.drv/ppd.c
index d116f8ebbc0..a1f66cd27b5 100644
--- a/dlls/wineps.drv/ppd.c
+++ b/dlls/wineps.drv/ppd.c
@@ -884,10 +884,7 @@ PPD *PSDRV_ParsePPD( const WCHAR *fname, HANDLE printer )
 #define PIA page->ImageableArea
 	    if(!PIA) {
  	        PIA = HeapAlloc( PSDRV_Heap, 0, sizeof(*PIA) );
-                push_lc_numeric("C");
-		sscanf(tuple.value, "%f%f%f%f", &PIA->llx, &PIA->lly,
-						&PIA->urx, &PIA->ury);
-                pop_lc_numeric();
+                _sscanf_l(tuple.value, "%f%f%f%f", c_locale, &PIA->llx, &PIA->lly, &PIA->urx, &PIA->ury);
 	    }
 #undef PIA
 	}
@@ -908,9 +905,7 @@ PPD *PSDRV_ParsePPD( const WCHAR *fname, HANDLE printer )
 #define PD page->PaperDimension
 	    if(!PD) {
  	        PD = HeapAlloc( PSDRV_Heap, 0, sizeof(*PD) );
-                push_lc_numeric("C");
-		sscanf(tuple.value, "%f%f", &PD->x, &PD->y);
-                pop_lc_numeric();
+                _sscanf_l(tuple.value, "%f%f", c_locale, &PD->x, &PD->y);
 	    }
 #undef PD
 	}
diff --git a/dlls/wineps.drv/ps.c b/dlls/wineps.drv/ps.c
index 8e52a97867a..7a8feeaedb8 100644
--- a/dlls/wineps.drv/ps.c
+++ b/dlls/wineps.drv/ps.c
@@ -625,9 +625,7 @@ BOOL PSDRV_WriteArc(print_ctx *ctx, INT x, INT y, INT w, INT h, double ang1,
 
     /* Make angles -ve and swap order because we're working with an upside
        down y-axis */
-    push_lc_numeric("C");
-    sprintf(buf, psarc, x, y, w, h, -ang2, -ang1);
-    pop_lc_numeric();
+    _sprintf_l(buf, psarc, c_locale, x, y, w, h, -ang2, -ang1);
     return PSDRV_WriteSpool(ctx, buf, strlen(buf));
 }
 
@@ -678,16 +676,11 @@ BOOL PSDRV_WriteSetColor(print_ctx *ctx, PSCOLOR *color)
 
     switch(color->type) {
     case PSCOLOR_RGB:
-        push_lc_numeric("C");
-        sprintf(buf, pssetrgbcolor, color->value.rgb.r, color->value.rgb.g,
-		color->value.rgb.b);
-        pop_lc_numeric();
+        _sprintf_l(buf, pssetrgbcolor, c_locale, color->value.rgb.r, color->value.rgb.g, color->value.rgb.b);
 	return PSDRV_WriteSpool(ctx, buf, strlen(buf));
 
     case PSCOLOR_GRAY:
-        push_lc_numeric("C");
-        sprintf(buf, pssetgray, color->value.gray.i);
-        pop_lc_numeric();
+        _sprintf_l(buf, pssetgray, c_locale, color->value.gray.i);
 	return PSDRV_WriteSpool(ctx, buf, strlen(buf));
 
     default:
@@ -786,9 +779,7 @@ BOOL PSDRV_WriteRotate(print_ctx *ctx, float ang)
 {
     char buf[256];
 
-    push_lc_numeric("C");
-    sprintf(buf, psrotate, ang);
-    pop_lc_numeric();
+    _sprintf_l(buf, psrotate, c_locale, ang);
     return PSDRV_WriteSpool(ctx, buf, strlen(buf));
 }
 
diff --git a/dlls/wineps.drv/psdrv.h b/dlls/wineps.drv/psdrv.h
index 2c4703de942..c69b2994479 100644
--- a/dlls/wineps.drv/psdrv.h
+++ b/dlls/wineps.drv/psdrv.h
@@ -544,13 +544,7 @@ extern DWORD ASCII85_encode(BYTE *in_buf, DWORD len, BYTE *out_buf);
 extern void passthrough_enter(print_ctx *ctx);
 extern void passthrough_leave(print_ctx *ctx);
 
-#define push_lc_numeric(x) do {					\
-	const char *tmplocale = setlocale(LC_NUMERIC,NULL);	\
-	setlocale(LC_NUMERIC,x);
-
-#define pop_lc_numeric()					\
-	setlocale(LC_NUMERIC,tmplocale);			\
-} while (0)
+extern _locale_t c_locale;
 
 static inline WCHAR *strdupW( const WCHAR *str )
 {
diff --git a/dlls/wineps.drv/type42.c b/dlls/wineps.drv/type42.c
index 0867881b68e..4f598962b73 100644
--- a/dlls/wineps.drv/type42.c
+++ b/dlls/wineps.drv/type42.c
@@ -203,11 +203,9 @@ TYPE42 *T42_download_header(print_ctx *ctx, char *ps_name,
     buf = HeapAlloc(GetProcessHeap(), 0, sizeof(start) + strlen(ps_name) +
 		    100);
 
-    push_lc_numeric("C");
-    sprintf(buf, start, ps_name,
-	    (float)bbox->left / emsize, (float)bbox->bottom / emsize,
-	    (float)bbox->right / emsize, (float)bbox->top / emsize);
-    pop_lc_numeric();
+    _sprintf_l(buf, start, c_locale, ps_name,
+               (float)bbox->left / emsize, (float)bbox->bottom / emsize,
+               (float)bbox->right / emsize, (float)bbox->top / emsize);
 
     PSDRV_WriteSpool(ctx, buf, strlen(buf));