diff --git a/src/compiler/Compile.go b/src/compiler/Compile.go
index d8a0065..774788c 100644
--- a/src/compiler/Compile.go
+++ b/src/compiler/Compile.go
@@ -59,7 +59,7 @@ func Compile(build *config.Build) (*core.Environment, error) {
 	for _, file := range env.Files {
 		for _, imp := range file.Imports {
 			if !imp.IsUsed() {
-				return nil, errors.NewAt(&UnusedImport{Package: imp.Package}, file, imp.Position)
+				return nil, errors.New(&UnusedImport{Package: imp.Package}, file, imp.Tokens)
 			}
 		}
 	}
diff --git a/src/errors/NewAt.go b/src/errors/NewAt.go
index 19b8d71..5155693 100644
--- a/src/errors/NewAt.go
+++ b/src/errors/NewAt.go
@@ -7,5 +7,10 @@ import (
 
 // NewAt is the same as New but with an exact position.
 func NewAt(err error, file *fs.File, position token.Position) *FileError {
-	return New(err, file, token.NewSource(position, position))
+	return &FileError{
+		err:    err,
+		file:   file,
+		source: token.NewSource(position, position),
+		stack:  stack(),
+	}
 }
\ No newline at end of file
diff --git a/src/fs/Import.go b/src/fs/Import.go
index 425cdb1..b42e15f 100644
--- a/src/fs/Import.go
+++ b/src/fs/Import.go
@@ -8,9 +8,9 @@ import (
 
 // Import contains data about an import statement in a file.
 type Import struct {
-	Package  string
-	Position token.Position
-	Used     atomic.Uint64
+	Package string
+	Tokens  token.List
+	Used    atomic.Uint64
 }
 
 // IsUsed returns true if the import was used.
diff --git a/src/scanner/scanImport.go b/src/scanner/scanImport.go
index 6d7ed38..3418e64 100644
--- a/src/scanner/scanImport.go
+++ b/src/scanner/scanImport.go
@@ -15,7 +15,7 @@ func (s *scanner) scanImport(file *fs.File, tokens token.List, i int) (int, erro
 	i++
 
 	if tokens[i].Kind != token.Identifier {
-		return i, errors.NewAt(ExpectedPackageName, file, tokens[i].Position)
+		return i, errors.New(ExpectedPackageName, file, tokens[i])
 	}
 
 	packageName := tokens[i].StringFrom(file.Bytes)
@@ -23,16 +23,16 @@ func (s *scanner) scanImport(file *fs.File, tokens token.List, i int) (int, erro
 	stat, err := os.Stat(fullPath)
 
 	if err != nil {
-		return i, errors.NewAt(&UnknownImport{Package: packageName}, file, tokens[i].Position)
+		return i, errors.New(&UnknownImport{Package: packageName}, file, tokens[i])
 	}
 
 	if !stat.IsDir() {
-		return i, errors.NewAt(&IsNotDirectory{Path: fullPath}, file, tokens[i].Position)
+		return i, errors.New(&IsNotDirectory{Path: fullPath}, file, tokens[i])
 	}
 
 	file.Imports[packageName] = &fs.Import{
-		Package:  packageName,
-		Position: tokens[i].Position,
+		Package: packageName,
+		Tokens:  tokens[i : i+1],
 	}
 
 	s.queueDirectory(fullPath, packageName)