diff --git a/lib/Makefile.Watcom b/lib/Makefile.Watcom
index 2130c276b..77e5a6e0a 100644
--- a/lib/Makefile.Watcom
+++ b/lib/Makefile.Watcom
@@ -81,7 +81,7 @@ RD = rmdir /q /s 2>NUL
 SYS_INCL = -I"$(%watcom)/h/nt" -I"$(%watcom)/h"
 
 CFLAGS = -3r -mf -hc -zff -zgf -zq -zm -zc -s -fr=con -w2 -fpi -oilrtfm &
-         -wcd=201 -bt=nt -d+ -dWIN32 -dCURL_WANTS_CA_BUNDLE_ENV         &
+         -wcd=201 -bt=nt -d+ -dWIN32 &
          -dBUILDING_LIBCURL -I. -I"../include" $(SYS_INCL)
 
 !ifdef %debug
diff --git a/lib/Makefile.m32 b/lib/Makefile.m32
index 8895dfd8a..93bc18824 100644
--- a/lib/Makefile.m32
+++ b/lib/Makefile.m32
@@ -250,8 +250,7 @@ ifdef SSL
   endif
   INCLUDES += -I"$(OPENSSL_INCLUDE)"
   CFLAGS += -DUSE_OPENSSL -DHAVE_OPENSSL_ENGINE_H -DHAVE_OPENSSL_PKCS12_H \
-            -DHAVE_ENGINE_LOAD_BUILTIN_ENGINES -DOPENSSL_NO_KRB5 \
-            -DCURL_WANTS_CA_BUNDLE_ENV
+            -DHAVE_ENGINE_LOAD_BUILTIN_ENGINES -DOPENSSL_NO_KRB5
   DLL_LIBS += -L"$(OPENSSL_LIBPATH)" $(OPENSSL_LIBS)
   ifdef SRP
     ifeq "$(wildcard $(OPENSSL_INCLUDE)/openssl/srp.h)" "$(OPENSSL_INCLUDE)/openssl/srp.h"
diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index 6391dd6c8..369b953d2 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -640,11 +640,6 @@ int netware_init(void);
 #endif
 #endif
 
-/* non-configure builds may define CURL_WANTS_CA_BUNDLE_ENV */
-#if defined(CURL_WANTS_CA_BUNDLE_ENV) && !defined(CURL_CA_BUNDLE)
-#define CURL_CA_BUNDLE getenv("CURL_CA_BUNDLE")
-#endif
-
 /*
  * Provide a mechanism to silence picky compilers, such as gcc 4.6+.
  * Parameters should of course normally not be unused, but for example when