diff --git a/doc/osal-detaildesign.doxyfile.in b/doc/osal-detaildesign.doxyfile.in
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+# All of the OSAL FSW code relevant for a detail design document is under
+# src/os and src/bsp, everything else is test and examples/support
+# Note this will include ALL OS/BSP layers, it does not currently filter
+# based on which OS/BSP is actually in use.
+INPUT    += @osal_MISSION_DIR@/src/os
+INPUT    += @osal_MISSION_DIR@/src/bsp
+