diff --git a/src/c/Makefile.in b/src/c/Makefile.in
index 4e7d65d60..4e27ee7cd 100644
--- a/src/c/Makefile.in
+++ b/src/c/Makefile.in
@@ -9,7 +9,8 @@ VPATH	= @srcdir@
 #
 TRUE_CC = @CC@
 CC	= @CC@
-CFLAGS	= -c -I. -I$(srcdir) -I$(HDIR) -I../h @CPPFLAGS@ @CFLAGS@ @ECL_CFLAGS@ \
+CFLAGS	= -c -I. -I$(srcdir) -I$(srcdir)/gc -I$(HDIR) -I../h @CPPFLAGS@ @CFLAGS@ \
+	  @ECL_CFLAGS@ \
 #	  -Wall -W -Wfloat-equal -Wundef -Wendif-labels -Wpointer-arith -Wcast-align \
 #	  -Wwrite-strings -Wconversion -Wsign-compare -Wmissing-prototypes -Wredundant-decls \
 #	  -Wunreachable-code -Winline
diff --git a/src/h/ecl-cmp.h b/src/h/ecl-cmp.h
index af4740cd1..4eaf776bf 100644
--- a/src/h/ecl-cmp.h
+++ b/src/h/ecl-cmp.h
@@ -62,11 +62,7 @@ typedef unsigned short uint16_t;
 #include <object.h>
 #include <stacks.h>
 #ifdef GBC_BOEHM
-# ifdef _MSC_VER
-#  include <gc.h>
-# else
-#  include <gc/gc.h>
-# endif
+# include <gc.h>
 #endif
 #include <external.h>
 #include <eval.h>
diff --git a/src/h/ecl.h b/src/h/ecl.h
index f2fedf252..db0b225af 100644
--- a/src/h/ecl.h
+++ b/src/h/ecl.h
@@ -68,11 +68,7 @@ typedef unsigned short uint16_t;
 # define _ARGS(x) x
 #endif
 #ifdef GBC_BOEHM
-# ifdef _MSC_VER
-#  include <gc.h>
-# else
-#  include <gc/gc.h>
-# endif
+# include <gc.h>
 #endif
 #include <external.h>
 /*#include "ecl-inl.h"*/