diff --git a/dlls/wineps/ps.c b/dlls/wineps/ps.c
index 759f7318981..726ca7dd7a5 100644
--- a/dlls/wineps/ps.c
+++ b/dlls/wineps/ps.c
@@ -22,6 +22,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <locale.h>
 
 #define NONAMELESSUNION
 #define NONAMELESSSTRUCT
@@ -469,7 +470,9 @@ BOOL PSDRV_WriteArc(PSDRV_PDEVICE *physDev, INT x, INT y, INT w, INT h, double a
 
     /* 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();
     return PSDRV_WriteSpool(physDev, buf, strlen(buf));
 }
 
@@ -500,12 +503,16 @@ BOOL PSDRV_WriteSetColor(PSDRV_PDEVICE *physDev, PSCOLOR *color)
     PSDRV_CopyColor(&physDev->inkColor, 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();
 	return PSDRV_WriteSpool(physDev, buf, strlen(buf));
 
     case PSCOLOR_GRAY:
+        push_lc_numeric("C");
         sprintf(buf, pssetgray, color->value.gray.i);
+        pop_lc_numeric();
 	return PSDRV_WriteSpool(physDev, buf, strlen(buf));
 
     default:
@@ -604,7 +611,9 @@ BOOL PSDRV_WriteRotate(PSDRV_PDEVICE *physDev, float ang)
 {
     char buf[256];
 
+    push_lc_numeric("C");
     sprintf(buf, psrotate, ang);
+    pop_lc_numeric();
     return PSDRV_WriteSpool(physDev, buf, strlen(buf));
 }
 
diff --git a/dlls/wineps/psdrv.h b/dlls/wineps/psdrv.h
index 058f8967e72..cb7abbc69d2 100644
--- a/dlls/wineps/psdrv.h
+++ b/dlls/wineps/psdrv.h
@@ -549,4 +549,13 @@ extern void T42_free(TYPE42 *t42);
 extern DWORD RLE_encode(BYTE *in_buf, DWORD len, BYTE *out_buf);
 extern DWORD ASCII85_encode(BYTE *in_buf, DWORD len, BYTE *out_buf);
 
+#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)
+
+
 #endif
diff --git a/dlls/wineps/type42.c b/dlls/wineps/type42.c
index 2424e295e11..97119c78bda 100644
--- a/dlls/wineps/type42.c
+++ b/dlls/wineps/type42.c
@@ -26,6 +26,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <assert.h>
+#include <locale.h>
 
 #include "windef.h"
 #include "winbase.h"
@@ -199,9 +200,11 @@ TYPE42 *T42_download_header(PSDRV_PDEVICE *physDev, 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();
 
     PSDRV_WriteSpool(physDev, buf, strlen(buf));