diff --git a/content/base/src/nsAtomListUtils.cpp b/content/base/src/nsAtomListUtils.cpp
index ab8b161f74eb..ef33a81d9f45 100644
--- a/content/base/src/nsAtomListUtils.cpp
+++ b/content/base/src/nsAtomListUtils.cpp
@@ -41,7 +41,7 @@
 /* static */ void
 nsAtomListUtils::AddRefAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
          info != info_end; ++info) {
         *(info->mAtom) = NS_NewPermanentAtom(info->mString);
     }
@@ -50,7 +50,7 @@ nsAtomListUtils::AddRefAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 /* static */ void
 nsAtomListUtils::ReleaseAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
          info != info_end; ++info) {
         NS_RELEASE(*(info->mAtom));
     }
@@ -61,7 +61,7 @@ nsAtomListUtils::IsMember(nsIAtom *aAtom,
                           const nsAtomListInfo* aInfo,
                           PRUint32 aInfoCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aInfoCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aInfoCount;
          info != info_end; ++info) {
         if (aAtom == *(info->mAtom))
             return PR_TRUE;
diff --git a/content/shared/src/nsAtomListUtils.cpp b/content/shared/src/nsAtomListUtils.cpp
index ab8b161f74eb..ef33a81d9f45 100644
--- a/content/shared/src/nsAtomListUtils.cpp
+++ b/content/shared/src/nsAtomListUtils.cpp
@@ -41,7 +41,7 @@
 /* static */ void
 nsAtomListUtils::AddRefAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
          info != info_end; ++info) {
         *(info->mAtom) = NS_NewPermanentAtom(info->mString);
     }
@@ -50,7 +50,7 @@ nsAtomListUtils::AddRefAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 /* static */ void
 nsAtomListUtils::ReleaseAtoms(const nsAtomListInfo* aInfo, PRUint32 aCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aCount;
          info != info_end; ++info) {
         NS_RELEASE(*(info->mAtom));
     }
@@ -61,7 +61,7 @@ nsAtomListUtils::IsMember(nsIAtom *aAtom,
                           const nsAtomListInfo* aInfo,
                           PRUint32 aInfoCount)
 {
-    for (nsAtomListInfo *info = aInfo, *info_end = aInfo + aInfoCount;
+    for (const nsAtomListInfo *info = aInfo, *info_end = aInfo + aInfoCount;
          info != info_end; ++info) {
         if (aAtom == *(info->mAtom))
             return PR_TRUE;