diff --git a/srcpkgs/libffado/patches/fix-gcc7.patch b/srcpkgs/libffado/patches/fix-gcc7.patch
new file mode 100644
index 00000000000..6bffbbd86c5
--- /dev/null
+++ b/srcpkgs/libffado/patches/fix-gcc7.patch
@@ -0,0 +1,22 @@
+--- src/libieee1394/configrom.cpp.orig	2018-03-20 10:21:02.605121213 +0100
++++ src/libieee1394/configrom.cpp	2018-03-20 10:21:10.306106579 +0100
+@@ -195,7 +195,7 @@ ConfigRom::initialize()
+         memcpy( buf,
+                 ( void* )CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA( m_modelNameKv ),
+                 len );
+-    while ((buf + len - 1) == '\0') {
++    while (buf[len - 1] == '\0') {
+             len--;
+         }
+         // \todo XXX for edirol fa-66 it seems somehow broken. see above
+--- src/libieee1394/configrom.cpp.orig	2018-03-20 10:22:56.490904788 +0100
++++ src/libieee1394/configrom.cpp	2018-03-20 10:23:06.081886560 +0100
+@@ -176,7 +176,7 @@ ConfigRom::initialize()
+                 ( void* )CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA( m_vendorNameKv ),
+                 len );
+ 
+-    while ((buf + len - 1) == '\0') {
++    while (buf[len - 1] == '\0') {
+             len--;
+         }
+         // \todo XXX seems a bit strage to do this but the nodemgr.c code does