diff --git a/include/llvm-c/lto.h b/include/llvm-c/lto.h
index 8dccc786407..08c12af40ae 100644
--- a/include/llvm-c/lto.h
+++ b/include/llvm-c/lto.h
@@ -18,7 +18,6 @@
 
 #include <stdbool.h>
 #include <stddef.h>
-#include "llvm/Support/DataTypes.h"
 
 #define LTO_API_VERSION 4
 
@@ -147,7 +146,7 @@ lto_module_set_target_triple(lto_module_t mod, const char *triple);
 /**
  * Returns the number of symbols in the object module.
  */
-extern uint32_t
+extern unsigned int
 lto_module_get_num_symbols(lto_module_t mod);
 
 
@@ -155,14 +154,14 @@ lto_module_get_num_symbols(lto_module_t mod);
  * Returns the name of the ith symbol in the object module.
  */
 extern const char*
-lto_module_get_symbol_name(lto_module_t mod, uint32_t index);
+lto_module_get_symbol_name(lto_module_t mod, unsigned int index);
 
 
 /**
  * Returns the attributes of the ith symbol in the object module.
  */
 extern lto_symbol_attributes
-lto_module_get_symbol_attribute(lto_module_t mod, uint32_t index);
+lto_module_get_symbol_attribute(lto_module_t mod, unsigned int index);
 
 
 /**
diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp
index 3d7ef0a1cb9..75b40f42876 100644
--- a/tools/lto/lto.cpp
+++ b/tools/lto/lto.cpp
@@ -132,7 +132,7 @@ void lto_module_set_target_triple(lto_module_t mod, const char *triple)
 //
 // returns the number of symbols in the object module
 //
-uint32_t lto_module_get_num_symbols(lto_module_t mod)
+unsigned int lto_module_get_num_symbols(lto_module_t mod)
 {
     return mod->getSymbolCount();
 }
@@ -140,7 +140,7 @@ uint32_t lto_module_get_num_symbols(lto_module_t mod)
 //
 // returns the name of the ith symbol in the object module
 //
-const char* lto_module_get_symbol_name(lto_module_t mod, uint32_t index)
+const char* lto_module_get_symbol_name(lto_module_t mod, unsigned int index)
 {
     return mod->getSymbolName(index);
 }
@@ -150,7 +150,7 @@ const char* lto_module_get_symbol_name(lto_module_t mod, uint32_t index)
 // returns the attributes of the ith symbol in the object module
 //
 lto_symbol_attributes lto_module_get_symbol_attribute(lto_module_t mod, 
-                                                      uint32_t index)
+                                                      unsigned int index)
 {
     return mod->getSymbolAttributes(index);
 }