diff --git a/lldb/include/lldb/Utility/LLDBAssert.h b/lldb/include/lldb/Utility/LLDBAssert.h
index c68c1bb7b1bd..5ca252f20032 100644
--- a/lldb/include/lldb/Utility/LLDBAssert.h
+++ b/lldb/include/lldb/Utility/LLDBAssert.h
@@ -20,7 +20,7 @@
 
 namespace lldb_private {
     void
-    lldb_assert (int expression,
+    lldb_assert (bool expression,
                  const char* expr_text,
                  const char* func,
                  const char* file,
diff --git a/lldb/source/Utility/LLDBAssert.cpp b/lldb/source/Utility/LLDBAssert.cpp
index c11c24b0e42a..68aa872c83cf 100644
--- a/lldb/source/Utility/LLDBAssert.cpp
+++ b/lldb/source/Utility/LLDBAssert.cpp
@@ -17,7 +17,7 @@ using namespace llvm;
 using namespace lldb_private;
 
 void
-lldb_private::lldb_assert (int expression,
+lldb_private::lldb_assert (bool expression,
                            const char* expr_text,
                            const char* func,
                            const char* file,