diff --git a/src/07-registers/Cargo.toml b/src/07-registers/Cargo.toml
index 2b4fbaca9..4a1969876 100644
--- a/src/07-registers/Cargo.toml
+++ b/src/07-registers/Cargo.toml
@@ -4,5 +4,8 @@ edition = "2018"
 name = "registers"
 version = "0.1.0"
 
+[profile.release]
+debug=1
+
 [dependencies]
 aux7 = { path = "auxiliary" }