diff --git a/vyper/venom/analysis/cfg.py b/vyper/venom/analysis/cfg.py
index ab405685a0..90b18b353c 100644
--- a/vyper/venom/analysis/cfg.py
+++ b/vyper/venom/analysis/cfg.py
@@ -34,6 +34,8 @@ def analyze(self) -> None:
     def invalidate(self):
         from vyper.venom.analysis import DFGAnalysis, DominatorTreeAnalysis, LivenessAnalysis
 
-        self.analyses_cache.invalidate_analysis(DFGAnalysis)
         self.analyses_cache.invalidate_analysis(DominatorTreeAnalysis)
         self.analyses_cache.invalidate_analysis(LivenessAnalysis)
+
+        # be conservative - assume cfg invalidation invalidates dfg
+        self.analyses_cache.invalidate_analysis(DFGAnalysis)