diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -100,15 +100,16 @@
 
         // nPowTargetTimespan / nPowTargetSpacing
         consensus.nMinerConfirmationWindow = 2016;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY] = {
-            .bit = 28,
-            // 95% of 2016
-            .nActivationThreshold = 1916,
-            // January 1, 2008
-            .nStartTime = 1199145601,
-            // December 31, 2008
-            .nTimeout = 1230767999,
-        };
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
+        // 95% of 2016
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY]
+            .nActivationThreshold = 1916;
+        // January 1, 2008
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime =
+            1199145601;
+        // December 31, 2008
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout =
+            1230767999;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork =
@@ -284,13 +285,13 @@
 
         // nPowTargetTimespan / nPowTargetSpacing
         consensus.nMinerConfirmationWindow = 2016;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY] = {
-            .bit = 28,
-            // January 1, 2008
-            .nStartTime = 1199145601,
-            // December 31, 2008
-            .nTimeout = 1230767999,
-        };
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
+        // January 1, 2008
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime =
+            1199145601;
+        // December 31, 2008
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout =
+            1230767999;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork =
@@ -423,11 +424,10 @@
 
         // Faster than normal for regtest (144 instead of 2016)
         consensus.nMinerConfirmationWindow = 144;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY] = {
-            .bit = 28,
-            // 75% of 144
-            .nActivationThreshold = 108,
-        };
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
+        // 75% of 144
+        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY]
+            .nActivationThreshold = 108;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S("0x00");