diff --git a/ghc-mod.cabal b/ghc-mod.cabal
index 915d2c18f..a959ea94e 100644
--- a/ghc-mod.cabal
+++ b/ghc-mod.cabal
@@ -208,10 +208,10 @@ Library
                       , cabal-helper         < 0.8  && >= 0.7.1.0
                       , ghc                  < 8.2  && >= 7.6
 
-  if impl(ghc                                < 7.8)
-    Build-Depends:      convertible          < 1.2  && >= 1.1.0.0
   if impl(ghc >= 8.0)
     Build-Depends:      ghc-boot
+  if impl(ghc < 7.8)
+    Build-Depends:      convertible          < 1.2  && >= 1.1.0.0
 
 Executable ghc-mod
   Default-Language:     Haskell2010