diff --git a/auto/make b/auto/make
index ec09f0164..dc9123989 100644
--- a/auto/make
+++ b/auto/make
@@ -36,14 +36,7 @@ manpage: $NXT_BUILD_DIR/share/man/man8/unitd.8
 
 END
 
-
-NXT_OS=$(uname -s)
-NXT_GNU_MAKE=$(make --version | grep GNU || true)
-
-# Requires GNU make. On OpenIndiana at least we have to use gmake
-if [ -n "$NXT_GNU_MAKE" ] || [ $NXT_OS = "SunOS" ]; then
-
-	cat << END >> $NXT_MAKEFILE
+cat << END >> $NXT_MAKEFILE
 # By default compiler etc output is hidden, use
 #   make V=1 ...
 # to show it.
@@ -78,10 +71,9 @@ endif
 
 END
 
-fi
-
 # potentially set otel lib location
 if [ $NXT_OTEL = YES ]; then
+
 cat << END >> $NXT_MAKEFILE
 
 ifeq (\$D,1)
@@ -91,6 +83,7 @@ else
 endif
 
 END
+
 fi
 
 # The include paths list.