diff --git a/include/aidge/data/Tensor.hpp b/include/aidge/data/Tensor.hpp
index a74667859c2fbb7c4065a145d462bc89906aa6e6..58c434bccc7c8dd39a93c46ecf74c38d7d834d1a 100644
--- a/include/aidge/data/Tensor.hpp
+++ b/include/aidge/data/Tensor.hpp
@@ -473,7 +473,7 @@ class Tensor : public Data,
 
 
 
-   std::string toString() {
+    std::string toString() {
         if (dims().empty()) { return "{}"; }
         std::string res;
         std::size_t dim = 0;