diff --git a/src/symbolize.h b/src/symbolize.h
index c6f9ec4..dcbb194 100644
--- a/src/symbolize.h
+++ b/src/symbolize.h
@@ -56,7 +56,7 @@
 
 #include "utilities.h"
 #include "config.h"
-#include "glog/logging.h"
+#include <glog/logging.h>
 
 #ifdef HAVE_SYMBOLIZE
 
@@ -121,6 +121,7 @@
                                  char* out,
                                  size_t out_size,
                                  uint64_t relocation);
+GLOG_EXPORT
 void InstallSymbolizeCallback(SymbolizeCallback callback);
 
 // Installs a callback function, which will be called instead of
@@ -137,7 +138,7 @@
                                                uint64_t& start_address,
                                                uint64_t& base_address,
                                                char* out_file_name,
-                                               int out_file_name_size);
+                                               size_t out_file_name_size);
 void InstallSymbolizeOpenObjectFileCallback(
     SymbolizeOpenObjectFileCallback callback);
 
@@ -151,7 +152,7 @@
 // symbol name to "out".  The symbol name is demangled if possible
 // (supports symbols generated by GCC 3.x or newer).  Otherwise,
 // returns false.
-GOOGLE_GLOG_DLL_DECL bool Symbolize(void *pc, char *out, int out_size);
+GLOG_EXPORT bool Symbolize(void* pc, char* out, size_t out_size);
 
 _END_GOOGLE_NAMESPACE_