diff --git a/.github/kernel-matrix.conf b/.github/kernel-matrix.conf
index 4c9d00ec7..4b16b95d5 100644
--- a/.github/kernel-matrix.conf
+++ b/.github/kernel-matrix.conf
@@ -28,7 +28,6 @@ GITHUB_REGRESSION_KERNEL_SELECTORS="\
 4.14 \
 4.9 \
 3.18 \
-3.10 \
 Rocky^10.2 \
 Rocky^10.1 \
 Rocky^9.8 \
diff --git a/nightly/conf/nightly.conf b/nightly/conf/nightly.conf
index a1be2fd18..535e4e83e 100644
--- a/nightly/conf/nightly.conf
+++ b/nightly/conf/nightly.conf
@@ -70,14 +70,6 @@ ABT_KERNELS="  \
 4.0.9-nc       \
 3.19.8-nc      \
 3.18.140-nc    \
-3.17.8-nc      \
-3.16.85-nc     \
-3.15.10-nc     \
-3.14.79-nc     \
-3.13.11-nc     \
-3.12.74-nc     \
-3.11.10-nc     \
-3.10.108-nc    \
 6.12.0-211.66.1.el10_2^Rocky^10.2-nc     \
 6.12.0-124.56.1.el10_1^Rocky^10.1-nc     \
 5.14.0-687.58.1.el9_8^Rocky^9.8-nc       \
diff --git a/scst/include/backport.h b/scst/include/backport.h
index d2200849e..98ba43e74 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -30,8 +30,9 @@
 #error RHEL 6 is no longer supported. Please upgrade to RHEL 7 or later.
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
-#error SCST does not support kernels older than 3.10.0.
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0) && \
+	(!defined(RHEL_MAJOR) || RHEL_MAJOR - 0 < 7)
+#error SCST requires Linux 3.18 or later, except for supported RHEL 7 kernels.
 #endif
 
 #include <linux/bio.h>