diff --git a/debian/changelog b/debian/changelog
index 4fab4b80..2cf6f3fa 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -5,6 +5,7 @@ llvm-toolchain-19 (1:19.1.0~++rc3-1~exp2) UNRELEASED; urgency=medium
   * Don't require g++-multilib on s390x for newer Ubuntu releases.
   * Factor-out ocaml architectures.
   * Don't try to install xray and profile headers on armel and armhf.
+  * Disable ocaml on armhf, requires ocamlopt.
 
  -- Matthias Klose <doko@ubuntu.com>  Tue, 27 Aug 2024 11:47:25 +0200
 
diff --git a/debian/control b/debian/control
index 45a29154..83eb64b3 100644
--- a/debian/control
+++ b/debian/control
@@ -19,10 +19,10 @@ Build-Depends: debhelper (>= 10.0), cmake, ninja-build,
     g++-multilib [amd64 i386 kfreebsd-amd64 mips64 mips64el mipsel powerpc ppc64 s390 s390x sparc sparc64 x32],
     libjs-mathjax, python3-myst-parser | python3-recommonmark, python3-pexpect,
     doxygen, python3:any, python3-psutil, python3-matplotlib,
-    ocaml-base [amd64 arm64 armhf ppc64el riscv64 s390x] | ocaml-nox [amd64 arm64 armhf ppc64el riscv64 s390x],
-    ocaml-findlib [amd64 arm64 armhf ppc64el riscv64 s390x],
-    libctypes-ocaml-dev [amd64 arm64 armhf ppc64el riscv64 s390x],
-    dh-exec, dh-ocaml [amd64 arm64 armhf ppc64el riscv64 s390x],
+    ocaml-base [amd64 arm64 ppc64el riscv64 s390x] | ocaml-nox [amd64 arm64 ppc64el riscv64 s390x],
+    ocaml-findlib [amd64 arm64 ppc64el riscv64 s390x],
+    libctypes-ocaml-dev [amd64 arm64 ppc64el riscv64 s390x],
+    dh-exec, dh-ocaml [amd64 arm64 ppc64el riscv64 s390x],
     libpfm4-dev [linux-any], python3-setuptools, libz3-dev,
 # "| hello" is for older buster/bionic distros without spirv support
 # We need to keep the constraints coherent between the two alternatives, otherwise
@@ -458,7 +458,7 @@ Description: Modular compiler and toolchain technologies, tools
 
 Package: libllvm-19-ocaml-dev
 Section: ocaml
-Architecture: amd64 arm64 armhf ppc64el riscv64 s390x
+Architecture: amd64 arm64 ppc64el riscv64 s390x
 Suggests: llvm-19-doc
 Depends: ${shlibs:Depends}, ${misc:Depends}, ${ocaml:Depends}, llvm-19-dev (= ${binary:Version})
 Replaces: libllvm-x.y-ocaml-dev
diff --git a/debian/rules b/debian/rules
index dcbe4728..c8eeda69 100755
--- a/debian/rules
+++ b/debian/rules
@@ -539,7 +539,7 @@ endif
 
 DH_OPTIONS=
 OCAML_ENABLE= no
-OCAML_ARCHS := amd64 arm64 armhf ppc64el riscv64 s390x
+OCAML_ARCHS := amd64 arm64 ppc64el riscv64 s390x
 ifneq (,$(filter $(DEB_HOST_ARCH),$(OCAML_ARCHS)))
 # Enable OCAML for this arch.
 	OCAML_ENABLE=yes