diff --git a/rpm-ostree.spec b/rpm-ostree.spec
index e53be9f..4937524 100644
--- a/rpm-ostree.spec
+++ b/rpm-ostree.spec
@@ -133,6 +133,11 @@ The %{name}-devel package includes the header files for %{name}-libs.
 
 %prep
 %autosetup -Sgit -n %{name}-%{version}
+# We hit "LLVM ERROR: out of memory" with LTO on 32 bit 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1974927
+%if %{__isa_bits} == 32
+sed -ie 's,^lto = true,# disabled: lto = true,' Cargo.toml
+%endif
 
 %build
 env NOCONFIGURE=1 ./autogen.sh