diff --git a/README.md b/README.md
index 6828f47c27549d9125a19845648b638ad7cd1978..1a8d49c7fd6f1e2ccc24e18de9a87db38221000d 100644
--- a/README.md
+++ b/README.md
@@ -46,4 +46,17 @@ wget https://epics.anl.gov/bcda/synApps/tar/synApps_6_0.tar.gz
 ```
 
 
+### Synapps fix
 
+#### asyn headers
+
+```
+sed -i \
+     -e 's|epicsShareFunc|DBCORE_API|g' \
+     -e 's|epicsShareClass|DBCORE_API|g' \
+     -e 's|epicsShareExtern|DBCORE_API extern|g' \
+     -e 's|epicsShareDef\s*||g' \
+     -e 's|shareLib\.h|dbCoreAPI.h|g' \
+     -e 's|epicsShareAPI|epicsStdCall|g' \
+     -e '/#define\s*epicsExportSharedSymbols/d' *.h
+     ```