diff --git a/Makefile b/Makefile
index 5d0d1e0c..ec3ebd26 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 SRCS = mongoose.c test/unit_test.c test/packed_fs.c
 HDRS = $(wildcard src/*.h)
-DEFS ?= -DMG_MAX_HTTP_HEADERS=7 -DMG_ENABLE_LINES -DMG_ENABLE_PACKED_FS=1
+DEFS ?= -DMG_MAX_HTTP_HEADERS=7 -DMG_ENABLE_LINES -DMG_ENABLE_PACKED_FS=1 -DMG_ENABLE_SSI=1
 C_WARN ?= -Wmissing-prototypes -Wstrict-prototypes
 WARN ?= -W -Wall -Werror -Wshadow -Wdouble-promotion -fno-common -Wconversion -Wundef $(C_WARN)
 OPTS ?= -O3 -g3
diff --git a/examples/http-server/Makefile b/examples/http-server/Makefile
index 27fc706b..eefab512 100644
--- a/examples/http-server/Makefile
+++ b/examples/http-server/Makefile
@@ -1,7 +1,7 @@
 PROG ?= example
 ROOT ?= $(realpath $(CURDIR)/../..)
-DEFS ?= -DMG_ENABLE_LINES=1
-CFLAGS ?= -I../.. -W -Wall -DMG_ENABLE_IPV6=1 $(DEFS) $(EXTRA)
+DEFS ?= -DMG_ENABLE_LINES=1 -DMG_ENABLE_IPV6=1 -DMG_ENABLE_SSI=1
+CFLAGS ?= -I../.. -W -Wall $(DEFS) $(EXTRA)
 VCFLAGS = /nologo /W3 /O2 /I../.. $(DEFS) $(EXTRA) /link /incremental:no /machine:IX86
 VC98 = docker run -it --rm -e Tmp=. -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/vc98
 LIN = docker run -it --rm -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/cc2
diff --git a/mongoose.h b/mongoose.h
index a5585046..15ab0c4b 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -537,7 +537,7 @@ int sscanf(const char *, const char *, ...);
 #endif
 
 #ifndef MG_ENABLE_SSI
-#define MG_ENABLE_SSI 1
+#define MG_ENABLE_SSI 0
 #endif
 
 #ifndef MG_ENABLE_IPV6
diff --git a/src/config.h b/src/config.h
index d239befa..49074dae 100644
--- a/src/config.h
+++ b/src/config.h
@@ -21,7 +21,7 @@
 #endif
 
 #ifndef MG_ENABLE_SSI
-#define MG_ENABLE_SSI 1
+#define MG_ENABLE_SSI 0
 #endif
 
 #ifndef MG_ENABLE_IPV6