diff --git a/rust-proc-macro2.spec b/rust-proc-macro2.spec
index 8204bd3..5e92fa7 100644
--- a/rust-proc-macro2.spec
+++ b/rust-proc-macro2.spec
@@ -87,8 +87,9 @@ use the "span-locations" feature of the "%{crate}" crate.
 
 %if %{with check}
 %check
+# * skip a test that harmlessly fails on 32-bit architectures
 # * skip doctests that don't compile
-%cargo_test -- -- --skip 'src/lib.rs'
+%cargo_test -- -- --skip test_proc_macro2_wrapper_size_without_locations --skip 'src/lib.rs'
 %endif
 
 %changelog
diff --git a/rust2rpm.toml b/rust2rpm.toml
index 60987fc..ac72677 100644
--- a/rust2rpm.toml
+++ b/rust2rpm.toml
@@ -5,6 +5,12 @@ summary = "Substitute implementation of the Rust compiler's proc_macro API"
 hide = ["nightly"]
 
 [tests]
-skip = ["'src/lib.rs'"]
-comments = ["skip doctests that don't compile"]
+skip = [
+    "test_proc_macro2_wrapper_size_without_locations",
+    "'src/lib.rs'",
+]
+comments = [
+    "skip a test that harmlessly fails on 32-bit architectures",
+    "skip doctests that don't compile",
+]