diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 02e9e5a..b51e88e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,9 +14,11 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Run make
+      - name: Build all platforms and run tests
         run: |
-          make
+          sudo apt install pycodestyle
+          make lint
+          make all integration
 
       - name: Run cargo
         run: |
diff --git a/Makefile b/Makefile
index 647c6e2..bfd072f 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ PLATFORMS := $(foreach platform,$(wildcard platforms/*),$(platform)/gpt)
 BINS := gen_partition.py msp.py ptool.py
 PREFIX ?= /usr/local
 
-.PHONY: all
+.PHONY: all check lint integration
 
 all: $(PLATFORMS)
 
@@ -13,10 +13,16 @@ all: $(PLATFORMS)
 %/partitions.xml: %/partitions.conf
 	$(TOPDIR)/gen_partition.py -i $^ -o $@
 
-check:
+lint:
 	# W605: invalid escape sequence
 	pycodestyle --select=W605 *.py
 
+integration: all
+	# make sure generated output has created expected files
+	tests/integration/check-missing-files platforms/*/*.xml
+
+check: lint integration
+
 install: $(BINS)
 	install -d $(DESTDIR)$(PREFIX)/bin
 	install -m 755 $^ $(DESTDIR)$(PREFIX)/bin
diff --git a/ptool.py b/ptool.py
index f20d375..5a8ff29 100755
--- a/ptool.py
+++ b/ptool.py
@@ -396,6 +396,7 @@ def CreateErasingRawProgramFiles():
         temp.append(Comment('NOTE: This is an ** Autogenerated file **'))
         temp.append(Comment('NOTE: Sector size is %ibytes'%SECTOR_SIZE_IN_BYTES))
 
+        CreateFileOfZeros("zeros_33sectors.bin",33)
         UpdateRawProgram(temp,0, 0.5, i, 0, 1, "zeros_33sectors.bin", "false", "Overwrite MBR sector")
         UpdateRawProgram(temp,1, BackupGPTNumLBAs*SECTOR_SIZE_IN_BYTES/1024.0, i, 0, BackupGPTNumLBAs, "zeros_%dsectors.bin" % BackupGPTNumLBAs, "false", "Overwrite Primary GPT Sectors")
 
@@ -795,7 +796,7 @@ def CreateGPTPartitionTable(PhysicalPartitionNumber,UserProvided=False):
                                  PhysicalPartitionNumber,
                                  FileOffset[z],
                                  LastLBA-FirstLBA+1-FilePartitionOffset[z], # num_partition_sectors
-                                 "zeros_33sectorS.bin",
+                                 "zeros_33sectors.bin",
                                  "false",
                                  PartitionLabel,
                                  PhyPartition[k][j]['readbackverify'],
diff --git a/tests/integration/check-missing-files b/tests/integration/check-missing-files
new file mode 100755
index 0000000..f6a7307
--- /dev/null
+++ b/tests/integration/check-missing-files
@@ -0,0 +1,77 @@
+#!/bin/sh
+# Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+
+# Takes XML files as arguments, collects the filenames referenced, and checks
+# if any gpt_* or zeros_* file is missing
+
+set -eu
+
+errors=no
+
+for xml in "$@"; do
+    dir="$(dirname "${xml}")"
+    for file in $(sed -En 's/.*filename="([^"]+)".*/\1/p' "${xml}" | sort -u); do
+        case "${file}" in
+          # expected files that should be generated by ptool
+          gpt_*|zeros_*)
+            if ! [ -r "${dir}/${file}" ]; then
+                errors=yes
+                echo "Missing ${file} referenced in ${xml}" >&2
+            fi
+          ;;
+          # known files that will be provided by the OS
+          abl.elf) ;;
+          aop.mbn) ;;
+          boot.img) ;;
+          cmnlib.mbn) ;;
+          cmnlib64.mbn) ;;
+          cpucp.elf) ;;
+          devcfg_iot.mbn) ;;
+          devcfg.mbn) ;;
+          efi.bin) ;;
+          DISK) ;;
+          dtb.bin) ;;
+          emmc_appsboot.mbn) ;;
+          featenabler.mbn) ;;
+          fs_image_linux.tar.gz.mbn.img) ;;
+          hyp.mbn) ;;
+          hypvm.mbn) ;;
+          imagefv.elf) ;;
+          keymaster.mbn) ;;
+          keymaster64.mbn) ;;
+          km4.mbn) ;;
+          multi_image_qti.mbn) ;;
+          multi_image.mbn) ;;
+          pmic.elf) ;;
+          qupv3fw.elf) ;;
+          rootfs.img) ;;
+          rpm.mbn) ;;
+          sbc_1.0_8016.bin) ;;
+          sbc_1.0_8096.bin) ;;
+          sbl1.mbn) ;;
+          sec.dat) ;;
+          sed.dat) ;;
+          shrm.elf) ;;
+          storsec.mbn) ;;
+          tools.fv) ;;
+          tz.mbn) ;;
+          uefi_sec.mbn) ;;
+          uefi.elf) ;;
+          xbl_config.elf) ;;
+          xbl_feature_config.elf) ;;
+          xbl.elf) ;;
+          XblRamdump.elf) ;;
+          *)
+            echo "Unknown ${file} referenced in ${xml}" >&2
+            errors=1
+          ;;
+        esac
+    done
+done
+
+if [ "${errors}" != no ]; then
+    exit 1
+fi
+exit 0
+