diff --git a/src/configure b/src/configure
index 291a3730e1..fa65a76b74 100755
--- a/src/configure
+++ b/src/configure
@@ -5259,11 +5259,7 @@ case $OS in
     ;;
   BeOS)
     enable_cgcdefault="yes"
-    if test "${enable_sgcdebug}" = "yes" ; then
-      dummyvar=""
-    else
-      enable_sgc=yes
-    fi
+    enable_sgc=yes
     ;;
   Darwin)
 
@@ -5391,16 +5387,16 @@ fi
 
 ############## SGC ################
 
+if test "${enable_sgcdebug}" = "yes" ; then
+  enable_sgc=yes
+  OPTIONS="$OPTIONS -DSGC_STD_DEBUGGING=1"
+fi
+
 if test "${enable_sgc}" = "yes" ; then
   GCDIR=sgc
   OPTIONS="$OPTIONS -DUSE_SENORA_GC"
 fi
 
-if test "${enable_sgcdebug}" = "yes" ; then
-  GCDIR=sgc
-  OPTIONS="$OPTIONS -DSGC_STD_DEBUGGING=1"
-fi
-
 ############## C flags ################
 
 ac_ext=c
diff --git a/src/racket/configure.ac b/src/racket/configure.ac
index 6ca417cab7..29104dc259 100644
--- a/src/racket/configure.ac
+++ b/src/racket/configure.ac
@@ -589,11 +589,7 @@ case $OS in
     ;;
   BeOS)
     enable_cgcdefault="yes"
-    if test "${enable_sgcdebug}" = "yes" ; then
-      dummyvar=""
-    else
-      enable_sgc=yes
-    fi
+    enable_sgc=yes
     ;;
   Darwin)
 
@@ -721,16 +717,16 @@ fi
 
 ############## SGC ################
 
+if test "${enable_sgcdebug}" = "yes" ; then
+  enable_sgc=yes
+  OPTIONS="$OPTIONS -DSGC_STD_DEBUGGING=1"
+fi
+
 if test "${enable_sgc}" = "yes" ; then
   GCDIR=sgc
   OPTIONS="$OPTIONS -DUSE_SENORA_GC"
 fi
 
-if test "${enable_sgcdebug}" = "yes" ; then
-  GCDIR=sgc
-  OPTIONS="$OPTIONS -DSGC_STD_DEBUGGING=1"
-fi
-
 ############## C flags ################
 
 AC_LANG_C