diff --git a/src/p_armpe.cpp b/src/p_armpe.cpp
index 348cbdbb..d2cd8b6f 100644
--- a/src/p_armpe.cpp
+++ b/src/p_armpe.cpp
@@ -882,6 +882,8 @@ void PackArmPe::pack(OutputFile *fo)
     oh.codesize = osection[1].vsize;
     oh.codebase = osection[1].vaddr;
     oh.headersize = osection[1].rawdataptr;
+    if (rvamin < osection[0].rawdataptr)
+        throwCantPack("object alignment too small");
 
     if (opt->win32_pe.strip_relocs && !isdll)
         oh.flags |= RELOCS_STRIPPED;
diff --git a/src/p_w32pe.cpp b/src/p_w32pe.cpp
index 29f3f44d..331a1730 100644
--- a/src/p_w32pe.cpp
+++ b/src/p_w32pe.cpp
@@ -1021,6 +1021,8 @@ void PackW32Pe::pack(OutputFile *fo)
     oh.codebase = osection[1].vaddr;
     // oh.headersize = osection[0].rawdataptr;
     oh.headersize = rvamin;
+    if (rvamin < osection[0].rawdataptr)
+        throwCantPack("object alignment too small");
 
     if (opt->win32_pe.strip_relocs && !isdll)
         oh.flags |= RELOCS_STRIPPED;