diff --git a/poppler/GfxState.cc b/poppler/GfxState.cc
index dc7939b..a562a6c 100644
--- a/poppler/GfxState.cc
+++ b/poppler/GfxState.cc
@@ -3516,10 +3516,10 @@
     background.c[i] = shading->background.c[i];
   }
   hasBackground = shading->hasBackground;
-  xMin = shading->xMin;
-  yMin = shading->yMin;
-  xMax = shading->xMax;
-  yMax = shading->yMax;
+  bbox_xMin = shading->bbox_xMin;
+  bbox_yMin = shading->bbox_yMin;
+  bbox_xMax = shading->bbox_xMax;
+  bbox_yMax = shading->bbox_yMax;
   hasBBox = shading->hasBBox;
 }
 
@@ -3630,7 +3630,7 @@
     }
   }
 
-  xMin = yMin = xMax = yMax = 0;
+  bbox_xMin = bbox_yMin = bbox_xMax = bbox_yMax = 0;
   hasBBox = false;
   obj1 = dict->lookup("BBox");
   if (obj1.isArray()) {
@@ -3642,10 +3642,10 @@
       if (obj2.isNum() && obj3.isNum() && obj4.isNum() && obj5.isNum())
       {
         hasBBox = true;
-        xMin = obj2.getNum();
-        yMin = obj3.getNum();
-        xMax = obj4.getNum();
-        yMax = obj5.getNum();
+        bbox_xMin = obj2.getNum();
+        bbox_yMin = obj3.getNum();
+        bbox_xMax = obj4.getNum();
+        bbox_yMax = obj5.getNum();
       } else {
         error(errSyntaxWarning, -1, "Bad BBox in shading dictionary (Values not numbers)");
       }
diff --git a/poppler/GfxState.h b/poppler/GfxState.h
index 57bb26f..88463d1 100644
--- a/poppler/GfxState.h
+++ b/poppler/GfxState.h
@@ -866,7 +866,7 @@
   const GfxColor *getBackground() const { return &background; }
   bool getHasBackground() const { return hasBackground; }
   void getBBox(double *xMinA, double *yMinA, double *xMaxA, double *yMaxA) const
-    { *xMinA = xMin; *yMinA = yMin; *xMaxA = xMax; *yMaxA = yMax; }
+    { *xMinA = bbox_xMin; *yMinA = bbox_yMin; *xMaxA = bbox_xMax; *yMaxA = bbox_yMax; }
   bool getHasBBox() const { return hasBBox; }
 
 protected:
@@ -885,7 +885,7 @@
   bool hasBBox;
   GfxColorSpace *colorSpace;
   GfxColor background;
-  double xMin, yMin, xMax, yMax;
+  double bbox_xMin, bbox_yMin, bbox_xMax, bbox_yMax;
 };
 
 //------------------------------------------------------------------------