diff --git a/ledger-3.1.1-Amend-sha1.hpp-path.patch b/ledger-3.1.1-Amend-sha1.hpp-path.patch
new file mode 100644
index 0000000..b0458d2
--- /dev/null
+++ b/ledger-3.1.1-Amend-sha1.hpp-path.patch
@@ -0,0 +1,25 @@
+From 9af52328b8ee1aeafbe6b4ad43c3a9cc2cb8be5b Mon Sep 17 00:00:00 2001
+From: Jamie Nguyen <j@jamielinux.com>
+Date: Mon, 4 Mar 2019 16:08:09 +0000
+Subject: [PATCH] Amend sha1.hpp path
+
+---
+ src/utils.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/utils.h b/src/utils.h
+index 42ea2ae..70a8ea6 100644
+--- a/src/utils.h
++++ b/src/utils.h
+@@ -44,7 +44,7 @@
+ #ifndef _UTILS_H
+ #define _UTILS_H
+ 
+-#include <boost/uuid/sha1.hpp>
++#include <boost/uuid/detail/sha1.hpp>
+ 
+ /**
+  * @name Default values
+-- 
+2.20.1
+
diff --git a/ledger.spec b/ledger.spec
index 232a734..6486845 100644
--- a/ledger.spec
+++ b/ledger.spec
@@ -10,6 +10,7 @@ Source0:          https://github.com/ledger/ledger/archive/v%{version}.tar.gz#/%
 
 # https://github.com/ledger/ledger/pull/465
 Patch0:           ledger-3.1.1-fix-boost-1.61.patch
+Patch1:           ledger-3.1.1-Amend-sha1.hpp-path.patch
 
 BuildRequires:    boost-devel
 BuildRequires:    boost-python2-devel
@@ -77,13 +78,6 @@ sed -i -e 's#FIXME:UNDOCUMENTED#FIXMEUNDOCUMENTED#g' doc/ledger3.texi
 
 
 %build
-# /usr/include/c++/6.1.1/cstdlib:75:25: fatal error: stdlib.h: No such file.
-# Seems to be related to GCC 6.1, potentially fixed with Boost 1.61.
-# Hack around this for now.
-./acprep --prefix=%{_prefix} update || :
-sed -i -e 's# -isystem /usr/include##g' src/CMakeFiles/libledger.dir/build.make
-./acprep --prefix=%{_prefix} update
-
 %cmake . \
     -DCMAKE_INSTALL_PREFIX=%{_prefix} \
     -DCMAKE_SKIP_RPATH:BOOL=ON \
@@ -92,9 +86,6 @@ sed -i -e 's# -isystem /usr/include##g' src/CMakeFiles/libledger.dir/build.make
     -DBUILD_WEB_DOCS:BOOL=ON \
     -DBUILD_EMACSLISP:BOOL=ON
 
-sed -i -e 's# -isystem /usr/include##g' src/CMakeFiles/libledger.dir/build.make
-mkdir system.hh.gch
-#make %%{?_smp_mflags}
 make
 make doc