diff --git a/srcpkgs/apl/patches/fix-build.patch b/srcpkgs/apl/patches/fix-build.patch
new file mode 100644
index 00000000000..ba4828d727e
--- /dev/null
+++ b/srcpkgs/apl/patches/fix-build.patch
@@ -0,0 +1,11 @@
+--- src/Symbol.cc.orig	2018-01-10 18:59:55.390738393 +0100
++++ src/Symbol.cc	2018-01-10 19:03:58.169098358 +0100
+@@ -885,7 +885,7 @@ const bool can_set = (vs.name_class == N
+                      (vs.name_class == NC_OPERATOR) ||
+                      (vs.name_class == NC_UNUSED_USER_NAME);
+              
+-   Assert(nc == NC_FUNCTION || NC_OPERATOR || NC_UNUSED_USER_NAME);
++   Assert(nc == NC_FUNCTION || nc == NC_OPERATOR || nc == NC_UNUSED_USER_NAME);
+ 
+    if (!can_set)   DEFN_ERROR;
+    vs.sym_val.function = fun;
diff --git a/srcpkgs/apl/template b/srcpkgs/apl/template
index d175ce11795..921a0f975e6 100644
--- a/srcpkgs/apl/template
+++ b/srcpkgs/apl/template
@@ -1,7 +1,7 @@
 # Template file for 'apl'
 pkgname=apl
 version=1.7
-revision=2
+revision=3
 build_style=gnu-configure
 makedepends="ncurses-devel sqlite-devel"
 short_desc="GNU interpreter for APL (A Programming Language)"