diff --git a/Dockerfile b/Dockerfile
index e23493e..72a539b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,9 +26,13 @@ RUN apt-get update \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+# Workaround for Pi's
+ADD fcntl-linux.h.patch /tmp
+
 # Build SBBS
 RUN apt-get update \
-    && apt-get install -yqq build-essential libnspr4-dev libncurses5-dev libmozjs185-dev cvs wget pkgconf \
+    && apt-get install -yqq build-essential libnspr4-dev libncurses5-dev libmozjs185-dev cvs wget pkgconf patch \
+    && cd / && patch -p1 < /tmp/fcntl-linux.h.patch \
     && mkdir /opt/sbbs && cd /tmp \
     && wget http://cvs.synchro.net/cgi-bin/viewcvs.cgi/*checkout*/install/GNUmakefile \
     && make RELEASE=1 USE_DOSEMU=1 NO_X=1 JSINCLUDE=/usr/include/js JSLIB=mozjs185 SBBSDIR=/opt/sbbs install \
@@ -41,7 +45,7 @@ RUN apt-get update \
     && ln -sf nodes/node3 /opt/sbbs/ \
     && ln -sf nodes/node4 /opt/sbbs/ \
     && find /opt/sbbs -name CVS -type d -exec rm -rf {} + \
-    && apt-get -y purge build-essential libnspr4-dev libncurses5-dev libmozjs185-dev cvs wget pkgconf \
+    && apt-get -y purge build-essential libnspr4-dev libncurses5-dev libmozjs185-dev cvs wget pkgconf patch \
     && apt-get -y autoremove \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
diff --git a/fcntl-linux.h.patch b/fcntl-linux.h.patch
new file mode 100644
index 0000000..8794d86
--- /dev/null
+++ b/fcntl-linux.h.patch
@@ -0,0 +1,26 @@
+diff --git a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h b/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
+index 7e5b0aecdcb4..5a4aad0698b8 100644
+--- a/sysdeps/unix/sysv/linux/bits/fcntl-linux.h
++++ b/usr/include/arm-linux-gnueabihf/bits/fcntl-linux.h
+@@ -127,11 +127,17 @@ 
+    This means that they are inherited across fork or clone with CLONE_FILES
+    like BSD (flock) locks, and they are only released automatically when the
+    last reference to the the file description against which they were acquired
+-   is put. */
++   is put.
++
++   Note that Linux does not support legacy (non-LFS) struct flock on 32-bit
++   arches with OFD locks.  On those arches you need define both _GNU_SOURCE
++   and _FILE_OFFSET_BITS=64.  */
+ #ifdef __USE_GNU
+-# define F_OFD_GETLK	36
+-# define F_OFD_SETLK	37
+-# define F_OFD_SETLKW	38
++# if __OFF_T_MATCHES_OFF64_T || defined __USE_FILE_OFFSET64
++#  define F_OFD_GETLK	36
++#  define F_OFD_SETLK	37
++#  define F_OFD_SETLKW	38
++# endif
+ #endif
+ 
+ #ifdef __USE_LARGEFILE64