diff --git a/composer.json b/composer.json
index 785d988895b8aa96516b11116071f0809ff4ac65..084d56cc67cad26c7ad57add65d63bc6934b8bfc 100644
--- a/composer.json
+++ b/composer.json
@@ -22,9 +22,6 @@
 		"psr-4": {
 			"Grifart\\AssertFunction\\": "src"
 		},
-		"classmap": [
-			"src/exceptions.php"
-		],
 		"files": [
 			"src/functions.php"
 		]
@@ -33,10 +30,7 @@
 	"autoload-dev": {
 		"psr-4": {
 			"Grifart\\AssertFunction\\": "tests"
-		},
-		"files": [
-			"src/exceptions.php"
-		]
+		}
 	}
 
 }
diff --git a/src/exceptions.php b/src/FunctionSignatureAssertionError.php
similarity index 100%
rename from src/exceptions.php
rename to src/FunctionSignatureAssertionError.php