diff --git a/instrumentation/SanitizerCoverageLTO.so.cc b/instrumentation/SanitizerCoverageLTO.so.cc
index 20f1856e..74ef03df 100644
--- a/instrumentation/SanitizerCoverageLTO.so.cc
+++ b/instrumentation/SanitizerCoverageLTO.so.cc
@@ -1500,6 +1500,9 @@ void ModuleSanitizerCoverage::InjectCoverageAtBlock(Function &F, BasicBlock &BB,
     if (use_threadsafe_counters) {                                /* Atomic */
 
       IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One,
+#if LLVM_VERSION_MAJOR >= 13
+                          llvm_MaybeAlign(1),
+#endif
                           llvm::AtomicOrdering::Monotonic);
 
     } else {
diff --git a/instrumentation/SanitizerCoveragePCGUARD.so.cc b/instrumentation/SanitizerCoveragePCGUARD.so.cc
index 4a8c9e28..d79dd65a 100644
--- a/instrumentation/SanitizerCoveragePCGUARD.so.cc
+++ b/instrumentation/SanitizerCoveragePCGUARD.so.cc
@@ -1074,6 +1074,9 @@ void ModuleSanitizerCoverage::InjectCoverageAtBlock(Function &F, BasicBlock &BB,
     if (use_threadsafe_counters) {
 
       IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One,
+#if LLVM_VERSION_MAJOR >= 13
+                          llvm_MaybeAlign(1),
+#endif
                           llvm::AtomicOrdering::Monotonic);
 
     } else {
diff --git a/instrumentation/afl-llvm-lto-instrumentation.so.cc b/instrumentation/afl-llvm-lto-instrumentation.so.cc
index fe43fbe5..91f0e7e6 100644
--- a/instrumentation/afl-llvm-lto-instrumentation.so.cc
+++ b/instrumentation/afl-llvm-lto-instrumentation.so.cc
@@ -845,6 +845,9 @@ bool AFLLTOPass::runOnModule(Module &M) {
           if (use_threadsafe_counters) {
 
             IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One,
+#if LLVM_VERSION_MAJOR >= 13
+                                llvm_MaybeAlign(1),
+#endif
                                 llvm::AtomicOrdering::Monotonic);
 
           } else {
diff --git a/instrumentation/afl-llvm-pass.so.cc b/instrumentation/afl-llvm-pass.so.cc
index a8f1baff..a2de5cb3 100644
--- a/instrumentation/afl-llvm-pass.so.cc
+++ b/instrumentation/afl-llvm-pass.so.cc
@@ -679,6 +679,9 @@ bool AFLCoverage::runOnModule(Module &M) {
 
                                      */
         IRB.CreateAtomicRMW(llvm::AtomicRMWInst::BinOp::Add, MapPtrIdx, One,
+#if LLVM_VERSION_MAJOR >= 13
+                            llvm_MaybeAlign(1),
+#endif
                             llvm::AtomicOrdering::Monotonic);
         /*