diff --git a/drm/common/DrmSupportInfo.cpp b/drm/common/DrmSupportInfo.cpp
index 584c6a6..6294f50 100644
--- a/drm/common/DrmSupportInfo.cpp
+++ b/drm/common/DrmSupportInfo.cpp
@@ -50,7 +50,7 @@
     for (size_t i = 0; i < mMimeTypeVector.size(); i++) {
         const String8 item = mMimeTypeVector.itemAt(i);
 
-        if (!strcasecmp(item.string(), mimeType.string())) {
+        if (!strcasecmp(item.c_str(), mimeType.c_str())) {
             return true;
         }
     }
@@ -61,7 +61,7 @@
     for (size_t i = 0; i < mFileSuffixVector.size(); i++) {
         const String8 item = mFileSuffixVector.itemAt(i);
 
-        if (!strcasecmp(item.string(), fileType.string())) {
+        if (!strcasecmp(item.c_str(), fileType.c_str())) {
             return true;
         }
     }
diff --git a/drm/common/IDrmManagerService.cpp b/drm/common/IDrmManagerService.cpp
index a6d33b0..1b49be1 100644
--- a/drm/common/IDrmManagerService.cpp
+++ b/drm/common/IDrmManagerService.cpp
@@ -303,8 +303,8 @@
         const String8 value = drmInforequest->get(key);
         if (key == String8("FileDescriptorKey")) {
             int fd = -1;
-            if (sscanf(value.string(), "FileDescriptor[%d]", &fd) != 1) {
-                sscanf(value.string(), "%d", &fd);
+            if (sscanf(value.c_str(), "FileDescriptor[%d]", &fd) != 1) {
+                sscanf(value.c_str(), "%d", &fd);
             }
             data.writeFileDescriptor(fd);
         } else {
@@ -1330,7 +1330,7 @@
         const String8 mime = data.readString8();
 
         sp<DecryptHandle> handle
-            = openDecryptSession(uniqueId, fd, offset, length, mime.string());
+            = openDecryptSession(uniqueId, fd, offset, length, mime.c_str());
 
         if (NULL != handle.get()) {
             writeDecryptHandleToParcelData(handle.get(), reply);
@@ -1349,7 +1349,7 @@
         const String8 uri = data.readString8();
         const String8 mime = data.readString8();
 
-        sp<DecryptHandle> handle = openDecryptSession(uniqueId, uri.string(), mime.string());
+        sp<DecryptHandle> handle = openDecryptSession(uniqueId, uri.c_str(), mime.c_str());
 
         if (NULL != handle.get()) {
             writeDecryptHandleToParcelData(handle.get(), reply);
diff --git a/drm/common/ReadWriteUtils.cpp b/drm/common/ReadWriteUtils.cpp
index 16b5b34..97c3716 100644
--- a/drm/common/ReadWriteUtils.cpp
+++ b/drm/common/ReadWriteUtils.cpp
@@ -34,7 +34,7 @@
 
 String8 ReadWriteUtils::readBytes(const String8& filePath) {
     FILE* file = NULL;
-    file = fopen(filePath.string(), "r");
+    file = fopen(filePath.c_str(), "r");
 
     String8 string("");
     if (NULL != file) {
@@ -56,7 +56,7 @@
 
 int ReadWriteUtils::readBytes(const String8& filePath, char** buffer) {
     FILE* file = NULL;
-    file = fopen(filePath.string(), "r");
+    file = fopen(filePath.c_str(), "r");
     off64_t length = 0;
 
     if (NULL != file) {
@@ -77,15 +77,15 @@
 
 void ReadWriteUtils::writeToFile(const String8& filePath, const String8& data) {
     FILE* file = NULL;
-    file = fopen(filePath.string(), "w+");
+    file = fopen(filePath.c_str(), "w+");
 
     if (NULL != file) {
         int fd = fileno(file);
 
         int size = data.size();
         if (FAILURE != ftruncate(fd, size)) {
-            if (size != write(fd, data.string(), size)) {
-                ALOGE("Failed to write the data to: %s", filePath.string());
+            if (size != write(fd, data.c_str(), size)) {
+                ALOGE("Failed to write the data to: %s", filePath.c_str());
             }
         }
         fclose(file);
@@ -94,14 +94,14 @@
 
 void ReadWriteUtils::appendToFile(const String8& filePath, const String8& data) {
     FILE* file = NULL;
-    file = fopen(filePath.string(), "a+");
+    file = fopen(filePath.c_str(), "a+");
 
     if (NULL != file) {
         int fd = fileno(file);
 
         int size = data.size();
-        if (size != write(fd, data.string(), size)) {
-            ALOGE("Failed to write the data to: %s", filePath.string());
+        if (size != write(fd, data.c_str(), size)) {
+            ALOGE("Failed to write the data to: %s", filePath.c_str());
         }
         fclose(file);
     }