diff --git a/src/campaigns/cancel.rs b/src/campaigns/cancel.rs
index 9fda789d..0f33a357 100644
--- a/src/campaigns/cancel.rs
+++ b/src/campaigns/cancel.rs
@@ -45,6 +45,7 @@ pub(crate) fn cancel_campaign(env: &Env, campaign_id: u32) -> Result<(), Error>
 
     campaign.is_cancelled = true;
     campaign.is_active = false;
+    campaign.effective_amount_raised = 0;
     set_campaign(env, campaign_id, &campaign);
     remove_voting_state(env, campaign_id);
     prune_bookmarks_for_campaign(env, campaign_id);
@@ -94,6 +95,7 @@ pub(crate) fn admin_cancel_campaign(
 
     campaign.is_cancelled = true;
     campaign.is_active = false;
+    campaign.effective_amount_raised = 0;
     set_campaign(env, campaign_id, &campaign);
     remove_voting_state(env, campaign_id);
     prune_bookmarks_for_campaign(env, campaign_id);
diff --git a/src/contributions.rs b/src/contributions.rs
index 1a8ec0fc..67358975 100644
--- a/src/contributions.rs
+++ b/src/contributions.rs
@@ -278,10 +278,12 @@ pub(crate) fn claim_refund(env: &Env, campaign_id: u32, contributor: Address) ->
 
     decrement_contributor_count(env, campaign_id);
 
-    campaign.effective_amount_raised = campaign
-        .effective_amount_raised
-        .checked_sub(amount)
-        .ok_or(Error::Overflow)?;
+    if !campaign.is_cancelled {
+        campaign.effective_amount_raised = campaign
+            .effective_amount_raised
+            .checked_sub(amount)
+            .ok_or(Error::Overflow)?;
+    }
     set_campaign(env, campaign_id, &campaign);
 
     let total_raised = get_total_raised_global(env);