diff --git a/tests/alive-tv/asm-align-bug.srctgt.ll b/tests/alive-tv/asm-align-bug.srctgt.ll
new file mode 100644
index 000000000..145f95433
--- /dev/null
+++ b/tests/alive-tv/asm-align-bug.srctgt.ll
@@ -0,0 +1,11 @@
+; RUN: %alive-tv --tgt-is-asm %s
+
+define i24 @src(ptr %p) {
+  %v = load i24, ptr %p, align 4
+  ret i24 %v
+}
+
+define i24 @tgt(ptr %p) {
+  %v = load i24, ptr %p, align 1
+  ret i24 %v
+}
diff --git a/tools/transform.cpp b/tools/transform.cpp
index ee5810678..9cb2f8ecd 100644
--- a/tools/transform.cpp
+++ b/tools/transform.cpp
@@ -1943,7 +1943,8 @@ void Transform::preprocess() {
           unsigned bits = tgt_i->getType().bits();
           auto it = src_loads.find(bits);
           if (it != src_loads.end()) {
-            auto new_align = min(min(it->second, min_loads), uint64_t(bits/8));
+            auto new_align = min(min(it->second, min_loads),
+                                 bit_floor(uint64_t(bits/8)));
             if (tgt_i->getAlign() < new_align)
               tgt_i->setAlign(new_align);
           }
@@ -1953,7 +1954,8 @@ void Transform::preprocess() {
           unsigned bits = tgt_i->getValue().getType().bits();
           auto it = src_stores.find(bits);
           if (it != src_stores.end()) {
-            auto new_align = min(min(it->second, min_stores), uint64_t(bits/8));
+            auto new_align = min(min(it->second, min_stores),
+                                 bit_floor(uint64_t(bits/8)));
             if (tgt_i->getAlign() < new_align)
               tgt_i->setAlign(new_align);
           }