diff --git a/internal/lsp/source/implementation.go b/internal/lsp/source/implementation.go
index 486e3b1..7702b8e 100644
--- a/internal/lsp/source/implementation.go
+++ b/internal/lsp/source/implementation.go
@@ -77,6 +77,10 @@
 		if err != nil {
 			return nil, err
 		}
+		// Do not add interface itself to the list.
+		if ident.Declaration.spanRange == i.Declaration.spanRange {
+			continue
+		}
 		locations = append(locations, protocol.Location{
 			URI:   protocol.NewURI(ident.Declaration.URI()),
 			Range: decRange,