diff --git a/server/genquery2/include/irods/private/genquery2_scanner.hpp b/server/genquery2/include/irods/private/genquery2_scanner.hpp
index a6b61ff58a..2c63b4cdb4 100644
--- a/server/genquery2/include/irods/private/genquery2_scanner.hpp
+++ b/server/genquery2/include/irods/private/genquery2_scanner.hpp
@@ -7,8 +7,6 @@
 #  include <FlexLexer.h>
 #endif // yyFlexLexerOnce
 
-#include <iosfwd> // For std::istream and std::ostream.
-
 namespace irods::experimental::genquery2
 {
     class driver;