diff --git a/science/erkale/Makefile b/science/erkale/Makefile
index 776388757f96f..5a47285ac273a 100644
--- a/science/erkale/Makefile
+++ b/science/erkale/Makefile
@@ -1,6 +1,6 @@
 PORTNAME=	erkale
 DISTVERSION=	g20220405
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org
diff --git a/science/erkale/files/patch-src_dftfuncs.cpp b/science/erkale/files/patch-src_dftfuncs.cpp
new file mode 100644
index 0000000000000..7961ddc433b2c
--- /dev/null
+++ b/science/erkale/files/patch-src_dftfuncs.cpp
@@ -0,0 +1,38 @@
+--- src/dftfuncs.cpp.orig	2022-04-05 18:34:51 UTC
++++ src/dftfuncs.cpp
+@@ -434,7 +434,7 @@ double exact_exchange(int func_id) {
+     }
+ 
+ 
+-#if XC_MAJOR_VERSION >= 6
++#if XC_MAJOR_VERSION > 6
+     switch(xc_hyb_type(&func)) {
+     case(XC_HYB_HYBRID):
+       f=xc_hyb_exx_coef(&func);
+@@ -480,7 +480,7 @@ bool is_supported(int func_id) {
+       throw std::runtime_error(oss.str());
+     }
+     // Get flag
+-#if XC_MAJOR_VERSION >= 6
++#if XC_MAJOR_VERSION > 6
+     switch(xc_hyb_type(&func)) {
+     case(XC_HYB_SEMILOCAL):
+     case(XC_HYB_HYBRID):
+@@ -514,7 +514,7 @@ bool is_range_separated(int func_id, bool check) {
+       oss << "Functional "<<func_id<<" not found!";
+       throw std::runtime_error(oss.str());
+     }
+-#if XC_MAJOR_VERSION >= 6
++#if XC_MAJOR_VERSION > 6
+     ans=(xc_hyb_type(&func) == XC_HYB_CAM);
+ #else
+     // Get flag
+@@ -571,7 +571,7 @@ void range_separation(int func_id, double & omega, dou
+       xc_func_set_ext_params(&func, pars.memptr());
+     }
+ 
+-#if XC_MAJOR_VERSION >= 6
++#if XC_MAJOR_VERSION > 6
+     switch(xc_hyb_type(&func)) {
+     case(XC_HYB_HYBRID):
+     case(XC_HYB_CAM):