diff --git a/Jenkinsfile b/Jenkinsfile
index 54492e4..638ea68 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -27,7 +27,7 @@ pipeline {
 					}
 					steps {
 						sh("git submodule update --init --recursive --force")
-						sh("make -j4 CC='owcc -bnt' E=.exe")
+						sh("make -j4 -f Makefile.watcom")
 						sh("mv taiga.exe taiga-win32.exe")
 						archiveArtifacts("taiga-win32.exe")
 					}
diff --git a/Makefile b/Makefile
index 3783c8e..9c27fb8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,9 @@
-CC = cc
-CFLAGS = -I external/xemil/include -I src
-LDFLAGS =
-LIBS =
+CC ?= cc
+CFLAGS ?= -I external/xemil/include -I src
+LDFLAGS ?=
+LIBS ?=
+
+E ?=
 
 .PHONY: all format clean
 
diff --git a/Makefile.watcom b/Makefile.watcom
new file mode 100644
index 0000000..220c2d9
--- /dev/null
+++ b/Makefile.watcom
@@ -0,0 +1,4 @@
+CC = owcc -bnt
+E = .exe
+
+include Makefile