diff --git a/src/DataBase/FieldUpdatePolicy.hh b/src/DataBase/FieldUpdatePolicy.hh
index 2ff2b3eea..af13c3db2 100644
--- a/src/DataBase/FieldUpdatePolicy.hh
+++ b/src/DataBase/FieldUpdatePolicy.hh
@@ -41,11 +41,4 @@ private:
 
 #include "FieldUpdatePolicyInline.hh"
 
-#else
-
-// Forward declaration.
-namespace Spheral {
-  template<typename Dimension> class FieldUpdatePolicy;
-}
-
 #endif
diff --git a/src/Porosity/PalphaPorosity.hh b/src/Porosity/PalphaPorosity.hh
index 986add0e4..425973598 100644
--- a/src/Porosity/PalphaPorosity.hh
+++ b/src/Porosity/PalphaPorosity.hh
@@ -129,11 +129,4 @@ private:
 
 #include "PalphaPorosityInline.hh"
 
-#else
-
-// Forward declaration.
-namespace Spheral {
-  template<typename Dimension> class PalphaPorosity;
-}
-
 #endif
diff --git a/src/Porosity/PorosityModel.hh b/src/Porosity/PorosityModel.hh
index dddd2ff9c..2ea27873a 100644
--- a/src/Porosity/PorosityModel.hh
+++ b/src/Porosity/PorosityModel.hh
@@ -114,11 +114,4 @@ protected:
 
 #include "PorosityModelInline.hh"
 
-#else
-
-// Forward declaration.
-namespace Spheral {
-  template<typename Dimension> class PorosityModel;
-}
-
 #endif