diff --git a/Source/gravity/Castro_gravity.cpp b/Source/gravity/Castro_gravity.cpp
index 46eccda99f..7b300310ec 100644
--- a/Source/gravity/Castro_gravity.cpp
+++ b/Source/gravity/Castro_gravity.cpp
@@ -386,7 +386,7 @@ void Castro::construct_old_gravity_source(MultiFab& source, MultiFab& state_in,
             }
 #endif
 
-            Real SrE;
+            Real SrE{};
 
             if (castro::grav_source_type == 1 || castro::grav_source_type == 2) {
 
@@ -584,7 +584,7 @@ void Castro::construct_new_gravity_source(MultiFab& source, MultiFab& state_old,
 
                 // Correct energy
 
-                Real SrEcorr;
+                Real SrEcorr{};
 
                 if (castro::grav_source_type == 1) {