diff --git a/mozilla/content/base/src/nsRuleNode.cpp b/mozilla/content/base/src/nsRuleNode.cpp
index 884dafef6de..f413db6b38b 100644
--- a/mozilla/content/base/src/nsRuleNode.cpp
+++ b/mozilla/content/base/src/nsRuleNode.cpp
@@ -3504,7 +3504,7 @@ nsRuleNode::ComputeListData(nsStyleStruct* aStartStruct,
   }
 
   // list-style-image: url, none, inherit
-  if (eCSSUnit_URL == listData.mImage.GetUnit()) {
+  if (eCSSUnit_Image == listData.mImage.GetUnit()) {
     list->mListStyleImage = listData.mImage.GetURLValue();
   }
   else if (eCSSUnit_None == listData.mImage.GetUnit()) {
diff --git a/mozilla/content/html/style/src/nsCSSDataBlock.cpp b/mozilla/content/html/style/src/nsCSSDataBlock.cpp
index 95b02966ac1..988eda3bea1 100644
--- a/mozilla/content/html/style/src/nsCSSDataBlock.cpp
+++ b/mozilla/content/html/style/src/nsCSSDataBlock.cpp
@@ -185,9 +185,10 @@ nsCSSCompressedDataBlock::MapRuleInfoInto(nsRuleData *aRuleData) const
                     if (target->GetUnit() == eCSSUnit_Null) {
                         const nsCSSValue *val = ValueAtCursor(cursor);
                         NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
-                        if (iProp == eCSSProperty_background_image &&
+                        if ((iProp == eCSSProperty_background_image ||
+                             iProp == eCSSProperty_list_style_image) &&
                             val->GetUnit() == eCSSUnit_URL) {
-                          val->StartImageLoad(aRuleData->mPresContext->GetDocument());
+                            val->StartImageLoad(aRuleData->mPresContext->GetDocument());
                         }
                         *target = *val;
                         if (iProp == eCSSProperty_font_family) {
diff --git a/mozilla/layout/style/nsCSSDataBlock.cpp b/mozilla/layout/style/nsCSSDataBlock.cpp
index 95b02966ac1..988eda3bea1 100644
--- a/mozilla/layout/style/nsCSSDataBlock.cpp
+++ b/mozilla/layout/style/nsCSSDataBlock.cpp
@@ -185,9 +185,10 @@ nsCSSCompressedDataBlock::MapRuleInfoInto(nsRuleData *aRuleData) const
                     if (target->GetUnit() == eCSSUnit_Null) {
                         const nsCSSValue *val = ValueAtCursor(cursor);
                         NS_ASSERTION(val->GetUnit() != eCSSUnit_Null, "oops");
-                        if (iProp == eCSSProperty_background_image &&
+                        if ((iProp == eCSSProperty_background_image ||
+                             iProp == eCSSProperty_list_style_image) &&
                             val->GetUnit() == eCSSUnit_URL) {
-                          val->StartImageLoad(aRuleData->mPresContext->GetDocument());
+                            val->StartImageLoad(aRuleData->mPresContext->GetDocument());
                         }
                         *target = *val;
                         if (iProp == eCSSProperty_font_family) {
diff --git a/mozilla/layout/style/nsRuleNode.cpp b/mozilla/layout/style/nsRuleNode.cpp
index 884dafef6de..f413db6b38b 100644
--- a/mozilla/layout/style/nsRuleNode.cpp
+++ b/mozilla/layout/style/nsRuleNode.cpp
@@ -3504,7 +3504,7 @@ nsRuleNode::ComputeListData(nsStyleStruct* aStartStruct,
   }
 
   // list-style-image: url, none, inherit
-  if (eCSSUnit_URL == listData.mImage.GetUnit()) {
+  if (eCSSUnit_Image == listData.mImage.GetUnit()) {
     list->mListStyleImage = listData.mImage.GetURLValue();
   }
   else if (eCSSUnit_None == listData.mImage.GetUnit()) {