diff --git a/src/economy.cpp b/src/economy.cpp
--- a/src/economy.cpp
+++ b/src/economy.cpp
@@ -536,6 +536,7 @@ static void CompanyCheckBankrupt(Company
 				 * join another company (cheat) the "unowned" company can bankrupt. */
 				c->bankrupt_asked = MAX_UVALUE(CompanyMask);
 				c->bankrupt_timeout = 0x456;
+				free(cni);
 				break;
 			}