diff --git a/nvidia.spec b/nvidia.spec
index cf646f6..f78bdc5 100644
--- a/nvidia.spec
+++ b/nvidia.spec
@@ -3,7 +3,7 @@
 Name:          nvidia
 Version:       390.138
 Epoch:         1
-Release:       1mamba
+Release:       2mamba
 Summary:       NVIDIA proprietary accelerated drivers for the Linux Kernel
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -230,7 +230,7 @@ cat > %{buildroot}%{_prefix}/src/%{name}-%{version}/dkms.conf << _EOF
 PACKAGE_NAME=%{name}
 PACKAGE_VERSION=%{version}
 MAKE="ln -sf /usr/src/\${PACKAGE_NAME}-\${PACKAGE_VERSION}/nv-kernel.o \${dkms_tree}/\${PACKAGE_NAME}/\${PACKAGE_VERSION}/build/;\
-make SYSSRC=\${kernel_source_dir} modules"
+IGNORE_CC_MISMATCH=1 make SYSSRC=\${kernel_source_dir} modules"
 CLEAN="make SYSSRC=\${kernel_source_dir} clean"
 BUILT_MODULE_NAME[0]=nvidia
 BUILT_MODULE_LOCATION[0]=./
@@ -433,6 +433,9 @@ exit 0
 %doc current/{LICENSE,NVIDIA_Changelog,README.txt} current/html
 
 %changelog
+* Fri Aug 21 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 390.138-2mamba
+- dkms: add IGNORE_CC_MISMATCH=1 before make command to fix build with gcc 10.1+
+
 * Fri Jul 24 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 390.138-1mamba
 - update to 390.138