diff --git a/sn_utils.cpp b/sn_utils.cpp
index 6b6ec740..366f81bd 100644
--- a/sn_utils.cpp
+++ b/sn_utils.cpp
@@ -132,7 +132,7 @@ glm::vec4 sn_utils::d_vec4( std::istream& s )
 uint8_t sn_utils::d_uint8( std::istream& s ) {
 
 	uint8_t buf;
-	s.read((char*)buf, 1);
+    s.read((char*)&buf, 1);
 	return buf;
 }
 
@@ -221,7 +221,7 @@ void sn_utils::ls_float64(std::ostream &s, double t)
 
 void sn_utils::s_uint8(std::ostream &s, uint8_t v)
 {
-    s.write((char*)v, 1);
+    s.write((char*)&v, 1);
 }
 
 void sn_utils::s_str(std::ostream &s, std::string v)