diff --git a/src/builder/builder_dynamic.cpp b/src/builder/builder_dynamic.cpp
index ab41aa8..0667b6d 100644
--- a/src/builder/builder_dynamic.cpp
+++ b/src/builder/builder_dynamic.cpp
@@ -33,7 +33,7 @@ void *compile_and_return_ptr(builder_context &context, std::string source_name,
 		compiler_name += " -std=c++11 -fPIC ";
 	}
 
-	std::string compile_command = compiler_name + " -shared -O3 " + source_name + " -o " + compiled_name 
+	std::string compile_command = compiler_name + " -shared -O3 " + source_name + " -o " + compiled_name + " "
 		+ context.dynamic_compiler_flags;
 
 	int err = system(compile_command.c_str());