diff --git a/src/main.rs b/src/main.rs
index fa5c1ed..330d0b5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,18 @@
-use std::{env, fs, io, process};
 use std::io::Write;
+use std::{env, fs, io, process};
+
+mod error_codes {
+    pub const ERROR_INVALID_SCHEMA_FILE: i32 = 1;
+    pub const ERROR_INVALID_SCHEMA: i32 = 2;
+    pub const ERROR_BAD_QUERY: i32 = 3;
+}
+
+fn error_log<E>(error_code: i32, message: &str, err: E)
+where
+    E: std::fmt::Display,
+{
+    eprintln!("ERROR {}: {}: {}", error_code, message, err);
+}
 
 fn main() {
     // Get the schema file from the command line arguments or use the default.
@@ -9,12 +22,20 @@ fn main() {
 
     // Read the schema file and parse it into a schema object.
     let schema_file = fs::read_to_string(schema_file).unwrap_or_else(|err| {
-        eprintln!("Error reading schema file: {}", err);
+        error_log(
+            error_codes::ERROR_INVALID_SCHEMA_FILE,
+            "Couldn't read schema file",
+            err,
+        );
         process::exit(error_codes::ERROR_INVALID_SCHEMA_FILE);
     });
 
     let schema = minigraf::parse_schema(&schema_file).unwrap_or_else(|err| {
-        eprintln!("Error parsing schema: {}", err);
+        error_log(
+            error_codes::ERROR_INVALID_SCHEMA,
+            "Couldn't parse schema",
+            err,
+        );
         process::exit(error_codes::ERROR_INVALID_SCHEMA);
     });
     dbg!("schema: {:#?}", &schema);
@@ -33,14 +54,13 @@ fn main() {
         // Parse the query into a query object.
         let query = minigraf::parse_query(query);
         if query.is_err() {
-            eprintln!("Error parsing query: {}", query.unwrap_err());
+            error_log(
+                error_codes::ERROR_BAD_QUERY,
+                "Couldn't parse query",
+                query.err().unwrap(),
+            );
             continue;
         }
         dbg!("query: {:#?}", &query);
     }
 }
-
-mod error_codes {
-    pub const ERROR_INVALID_SCHEMA_FILE: i32 = 1;
-    pub const ERROR_INVALID_SCHEMA: i32 = 2;
-}