diff --git a/configure/os/CONFIG.solaris-sparc.solaris-sparc b/configure/os/CONFIG.solaris-sparc.solaris-sparc
index 26c089a9f..99f8a39af 100644
--- a/configure/os/CONFIG.solaris-sparc.solaris-sparc
+++ b/configure/os/CONFIG.solaris-sparc.solaris-sparc
@@ -58,3 +58,8 @@ LOADABLE_SHRLIB_LDFLAGS += -G -h $@ -z text
 
 OP_SYS_LDFLAGS += -z ignore -z combreloc -z lazyload
 
+# Filter for getting rid of "invalid white space character in directive" compiler warnings
+# when including headers created during win32 build.
+COMPILE_FILTER.c = 2>&1 | $(EPICS_BASE)/configure/tools/filterWarnings.pl
+COMPILE_FILTER.cpp = $(COMPILE_FILTER.c)
+