diff --git a/src/stv/options.rs b/src/stv/options.rs
index e14ec82..1c821d6 100644
--- a/src/stv/options.rs
+++ b/src/stv/options.rs
@@ -248,9 +248,19 @@ impl STVOptions {
 				return Err(STVError::InvalidOptions("--subtract-nontransferable requires --transferable-only"));
 			}
 		}
-		if !self.immediate_elect && self.surplus_order != SurplusOrder::BySize {
-			// Invalid because there is no other metric to determine which surplus to distribute
-			return Err(STVError::InvalidOptions("--no-immediate-elect requires --surplus-order by_size"));
+		if !self.immediate_elect {
+			if self.surplus_order != SurplusOrder::BySize {
+				// Invalid because there is no other metric to determine which surplus to distribute
+				return Err(STVError::InvalidOptions("--no-immediate-elect requires --surplus-order by_size"));
+			}
+			if self.quota_mode == QuotaMode::ERS97 {
+				// Invalid because candidates meeting the VRE never have surpluses distributed
+				return Err(STVError::InvalidOptions("--no-immediate-elect is incompatible with --quota-mode ers97"));
+			}
+			if self.quota_mode == QuotaMode::ERS76 {
+				// Invalid because candidates meeting the VRE never have surpluses distributed
+				return Err(STVError::InvalidOptions("--no-immediate-elect is incompatible with --quota-mode ers76"));
+			}
 		}
 		if self.min_threshold != "0" && self.defer_surpluses {
 			// TODO: NYI