diff --git a/science/gnudatalanguage/Makefile b/science/gnudatalanguage/Makefile
index b410beb2f4f5..1ff10398c473 100644
--- a/science/gnudatalanguage/Makefile
+++ b/science/gnudatalanguage/Makefile
@@ -47,7 +47,6 @@ CMAKE_ARGS=	-DREADLINEDIR:STRING="/usr"	\
 CPPFLAGS+=	${CFLAGS} -fno-inline -DNPY_NO_DEPRECATED_API -DNPY_1_7_API_VERSION
 CXXFLAGS+=	-std=gnu++11
 LDFLAGS+=	-lpthread -L${LOCALBASE}/lib
-# Two tests fail - https://github.com/gnudatalanguage/gdl/issues/2158
 TEST_TARGET=	test
 
 SLAVEDIRS=	science/py-gnudatalanguage
diff --git a/science/gnudatalanguage/files/patch-testsuite_get__path__to__exe.pro b/science/gnudatalanguage/files/patch-testsuite_get__path__to__exe.pro
new file mode 100644
index 000000000000..748a4629e36f
--- /dev/null
+++ b/science/gnudatalanguage/files/patch-testsuite_get__path__to__exe.pro
@@ -0,0 +1,11 @@
+--- testsuite/get_path_to_exe.pro.orig	2025-12-18 17:13:01 UTC
++++ testsuite/get_path_to_exe.pro
+@@ -11,7 +11,7 @@ known_case=0
+ ;
+ ; On Linux, this is fine with GDL, IDL & FL
+ ;
+-if (STRLOWCASE(!version.os) EQ 'linux') then begin
++if (STRLOWCASE(!version.os_family) eq 'unix') then begin
+    get_pid=FILE_READLINK('/proc/self')
+    get_abspath_to_exe=FILE_READLINK('/proc/'+get_pid+'/exe')
+    known_case=1