diff --git a/pmb/install/_install.py b/pmb/install/_install.py
index 89dd98df..be8f5705 100644
--- a/pmb/install/_install.py
+++ b/pmb/install/_install.py
@@ -465,8 +465,8 @@ def generate_binary_list(args, suffix, step):
         binary_start = offset * step
         binary_end = binary_start + binary_size
         for start, end in binary_ranges.items():
-            if ((binary_start >= start and binary_start <= end) or
-                    (binary_end >= start and binary_end <= end)):
+            if ((binary_start >= start and binary_start < end) or
+                    (binary_end > start and binary_end <= end)):
                 raise RuntimeError("The firmware overlaps with at least one "
                                    f"other firmware image: {binary}")
 
diff --git a/test/test_install.py b/test/test_install.py
index 057acfed..af7a193a 100644
--- a/test/test_install.py
+++ b/test/test_install.py
@@ -160,3 +160,23 @@ def test_generate_binary_list(args):
     with pytest.raises(RuntimeError) as e:
         func(args, suffix, step)
     assert str(e.value).startswith("The following firmware binary does not")
+
+    # Binaries are touching but not overlapping
+    # boot_part_start is at 2 sectors (1024 b)
+    # |-----|---------------------|-------------------|-------------------
+    # |  …  | binary2.bin (100 b) | small.bin (600 b) | /boot part start …
+    # |-----|---------------------|-------------------|-------------------
+    # 0    324                   424                 1024
+    step = 1
+    binaries = "binary2.bin:324,small.bin:424"
+    args.deviceinfo = {"sd_embed_firmware": binaries,
+                       "boot_part_start": "2"}
+    assert func(args, suffix, step) == [('binary2.bin', 324),
+                                        ('small.bin', 424)]
+
+    # Same layout written with different order in sd_embed_firmware
+    binaries = "small.bin:424,binary2.bin:324"
+    args.deviceinfo = {"sd_embed_firmware": binaries,
+                       "boot_part_start": "2"}
+    assert func(args, suffix, step) == [('small.bin', 424),
+                                        ('binary2.bin', 324)]