diff --git a/crash_reporter/chrome_collector.cc b/crash_reporter/chrome_collector.cc
index 91a926b..c94ef64 100644
--- a/crash_reporter/chrome_collector.cc
+++ b/crash_reporter/chrome_collector.cc
@@ -6,6 +6,7 @@
 
 #include <glib.h>
 #include <pcrecpp.h>
+#include <stdint.h>
 
 #include <string>
 #include <vector>
@@ -171,8 +172,8 @@
   }
 
   if (GetAdditionalLogs(log_path)) {
-    int64 minidump_size = 0;
-    int64 log_size = 0;
+    int64_t minidump_size = 0;
+    int64_t log_size = 0;
     if (base::GetFileSize(minidump_path, &minidump_size) &&
         base::GetFileSize(log_path, &log_size) &&
         minidump_size > 0 && log_size > 0 &&
diff --git a/crash_reporter/crash_collector.cc b/crash_reporter/crash_collector.cc
index 9b30074..d612ec7 100644
--- a/crash_reporter/crash_collector.cc
+++ b/crash_reporter/crash_collector.cc
@@ -509,7 +509,7 @@
   if ((i = contents.find("CHROMEOS_RELEASE_VERSION")) != contents.end()) {
     version = i->second;
   }
-  int64 payload_size = -1;
+  int64_t payload_size = -1;
   base::GetFileSize(FilePath(payload_path), &payload_size);
   std::string meta_data = StringPrintf("%sexec_name=%s\n"
                                        "ver=%s\n"
diff --git a/crash_reporter/user_collector.cc b/crash_reporter/user_collector.cc
index 198a43b..f387bd0 100644
--- a/crash_reporter/user_collector.cc
+++ b/crash_reporter/user_collector.cc
@@ -10,6 +10,7 @@
 #include <grp.h>  // For struct group.
 #include <pcrecpp.h>
 #include <pwd.h>  // For struct passwd.
+#include <stdint.h>
 #include <sys/types.h>  // For getpwuid_r, getgrnam_r, WEXITSTATUS.
 
 #include <set>
@@ -248,7 +249,7 @@
 bool UserCollector::ValidateProcFiles(const FilePath &container_dir) const {
   // Check if the maps file is empty, which could be due to the crashed
   // process being reaped by the kernel before finishing a core dump.
-  int64 file_size = 0;
+  int64_t file_size = 0;
   if (!base::GetFileSize(container_dir.Append("maps"), &file_size)) {
     LOG(ERROR) << "Could not get the size of maps file";
     return false;