diff --git a/backends/btor/README b/backends/btor/README
new file mode 100644
index 000000000..26cb377c6
--- /dev/null
+++ b/backends/btor/README
@@ -0,0 +1,23 @@
+
+This is the Yosys BTOR backend.
+It is developed by Ahmed Irfan <irfan@fbk.eu> - Fondazione Bruno Kessler, Trento, Italy
+
+Master git repository for the BTOR backend:
+https://github.com/ahmedirfan1983/yosys/tree/btor
+
+
+[[CITE]] BTOR: Bit-Precise Modelling of Word-Level Problems for Model Checking 
+Johannes Kepler University, Linz, Austria
+http://fmv.jku.at/papers/BrummayerBiereLonsing-BPR08.pdf
+
+
+Todos:
+------
+
+- Add checks for unsupported stuff
+    - unsupported cell types
+    - async resets
+    - etc..
+
+- Add support for $pmux and $lut cells
+
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index c69d9899b..eac4f8d13 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -960,7 +960,7 @@ struct BtorBackend : public Backend {
 				continue;
 
 			if (module->processes.size() != 0)
-				log_error("Found unmapped processes in module %s: unmapped processes are not supported in BLIF backend!\n", RTLIL::id2cstr(module->name));
+				log_error("Found unmapped processes in module %s: unmapped processes are not supported in BTOR backend!\n", RTLIL::id2cstr(module->name));
 
 			if (module->name == RTLIL::escape_id(top_module_name)) {
 				BtorDumper::dump(f, module, design, config);