diff --git a/src/mesa/Makefile.am b/src/mesa/Makefile.am
index 57325afabf7..8e4530da306 100644
--- a/src/mesa/Makefile.am
+++ b/src/mesa/Makefile.am
@@ -73,7 +73,7 @@ main/api_exec_es1.c: main/APIspec.xml main/es_generator.py main/APIspecutil.py m
 
 program/program_parse.tab.c program/program_parse.tab.h: program/program_parse.y
 	$(MKDIR_P) program
-	$(AM_V_GEN) $(YACC) -v -d --output=program/program_parse.tab.c $<
+	$(AM_V_GEN) $(YACC) -p "_mesa_program_" -v -d --output=program/program_parse.tab.c $<
 
 program/lex.yy.c: program/program_lexer.l
 	$(MKDIR_P) program
diff --git a/src/mesa/program/program_lexer.l b/src/mesa/program/program_lexer.l
index 0a50dab97fd..0947bb0462c 100644
--- a/src/mesa/program/program_lexer.l
+++ b/src/mesa/program/program_lexer.l
@@ -165,6 +165,7 @@ szf    [HR]?
 cc     C?
 sat    (_SAT)?
 
+%option prefix="_mesa_program_"
 %option bison-bridge bison-locations reentrant noyywrap
 %%