diff --git a/src/error.c b/src/error.c
new file mode 100644
index 0000000..e0c069e
--- /dev/null
+++ b/src/error.c
@@ -0,0 +1,21 @@
+#include "error.h"
+
+const char *OSQP_ERROR_MESSAGE[] = {
+  "Problem data validation.",
+  "Solver settings validation.",
+  "Linear system solver not available.\nTried to obtain it from shared library.",
+  "Linear system solver initialization.",
+  "KKT matrix factorization.\nThe problem seems to be non-convex.",
+  "Memory allocation.",
+  "Solver workspace not initialized.",
+};
+
+
+c_int _osqp_error(enum osqp_error_type error_code,
+		 const char * function_name) {
+# ifdef PRINTING
+  c_print("ERROR in %s: %s\n", function_name, OSQP_ERROR_MESSAGE[error_code-1]);
+# endif
+  return (c_int)error_code;
+}
+