diff --git a/flang/lib/Optimizer/OpenACC/Transforms/CMakeLists.txt b/flang/lib/Optimizer/OpenACC/Transforms/CMakeLists.txt
index 9bd56c161854..f122fae461a3 100644
--- a/flang/lib/Optimizer/OpenACC/Transforms/CMakeLists.txt
+++ b/flang/lib/Optimizer/OpenACC/Transforms/CMakeLists.txt
@@ -10,6 +10,7 @@ add_flang_library(FIROpenACCTransforms
   FIRAnalysis
   FIRBuilder
   FIRDialect
+  FIRDialectSupport
   FIROpenACCAnalysis
   HLFIRDialect